Yup, you’re right. When I googled “penguin diagram” to rip a picture for the video, I chose the first one I saw and didn’t even bother to check it. Thanks for pointing that out.
2nd. Sooooo close! Is it just me - or did one of the diagrams on the white board look like a dog? Happy Thanksgiving Kelly & to the best son ever!! ~ Love, Mom 💕
After a hard day of GR i'm taking , what makes the day better is 1 Andrew's math derivations 2 Alex Flournoy mathematical methods thanks , you are the hbar .🖐
@@AndrewDotsonvideos Puppy fat from mums cooking melts away when your diet consists of ramen and a side order of low level panic. Ah, how I miss my 20’s. 😂
Peskin and Schroder is an advanced undergraduate to graduate level and beyond textbook. As a student of applied mathematics, I find it extremely helpful. But for beginners, novices, and undergraduates. McMahon's QFT Demystified, Zee's QFT in a nutshell, and Schwichtenberg's QFT are good places to start. I discovered several new equations combining QFT and molecular biology in 2003 and am finally publishing my discoveries. Pray for me and keep on learning.
Breakdown of Audience 2% people who actually know physics 10% Tensor Ninjas honing their skills 69% people who just kept on watching the channel after seeing meme reviews 19% Andrew’s grandma rewatching videos
I know I'm coming late to this, but I have to comment. I've never had math or physics beyond B.Sc (Comp Sci) level. I've seen Feynman Diagrams for years in popular media (Scientific American, etc.) and had a vague general understanding that they aided calculation of probabilities, but I'd never seen an explanation of the mechanics of how it's actually done. So this was extremely interesting. Thank you, Andrew, good look with the dissertation.
Man, you inspire me so much to start studying physics! I’ve always loved maths and understanding how our universe works but, despite all that, I graduated in mechanical engineering instead (poor choice 😫). However, there are no schools near where I live and, even if there were, I wouldn’t be able to afford it. Hope to, someday, enroll in physics when I move out and maybe have the same level of understanding that you have in physics...someday😢. Thank you so much for these videos and feeding my dream/passion!
If anyone's into condensed matter, then Mattuck's _Guide to Feynman Diagrams in the Many-Body Problem_ is a really good read. It's definitely one of the best introductions to Feynman diagrams out there in my humble opinion.
This was an incredibly cool video! Feynman diagrams are absolutely awesome and Renormalization, while epic, is difficult as hell! Thanks for this video! 👍
Andrew please upload more videos on qft and strat a new series qft explained for beginners in which you go from basics to calculating feynman diagrams please
I took this course last year but dropped out once the pandemic happened. It's a course simply dedicated to learning Feynman diagrams for nuclear reactions. I'm thinking of taking it again before going into my Masters because it seems like a useful skill for a Physicist to have. Problem is the fact that ten different people will learn ten different rules and notations.
If you are using an external mic you can use an audio plugin to cut the computer fan noise when you aren’t talking. I use fab filter pro g which is a gate plugin but there’s a lot more plugins in the market for the same use! So In your case, every time you stop taking the plugin Will turn on and in sense compress the audio signal to zero and then turn off when you start talking again!!
You know I quit being a medical student coz I was required to pass a physics exam. And yet am subscribed. I like that words are being said and I don't understand shit. As a literature student it's an insane pleasure. It's just like sitting in my philosophy lectures. Just amazing.
@@riccardoorlando2262 It doesn't need to be accelerating, just moving. Magnetism is a relativistic correction to electricity. That is why magnetic fields are only generated by moving charges and only affect moving charges (classically speaking; charged particles with spin is a different can of worms).
@@riccardoorlando2262 Well, that's how I learned it in college. First, they taught us special relativity, which we then used to derive Maxwell's Equations. (Okay, we started with Gauss's Law and maybe some other stuff; it's been nearly 35 years.)
I thought the exponent on scalar theory (Φ³ , Φ⁴ …) meant the number of incoming and outgoing legs, i.e., Φ⁴ has 2 particles incoming and 2 outgoing, and Φ² just 1 particle incoming and 1 outgoing.
Oh no, I’m sorry, it’s the Green function of n points the one that dictates how many external legs your diagram will have: Φ⁴ using a Green function of 4 points means 4 external legs, right?. Also there is a constant next to the Φ (it is often λ or g, i.e. λ Φ⁴/4!) and I understand the number of vertex your diagram will have depends on the order of that exponen you work with (λ² means you’ll have 2 vertex).
Is it okay to prove the vertex interaction from the extra term in the minimally substituted QED Lagrangian? Where psi bar is the final state and psi A is the initial state for a fermion whose path is changed by coupling with a photon? Ie is this extra term the amplitude for this interaction?
I've never taken a course in QFT, but I've leafed through some texts on it, which is pretty much equivalent, right? At any rate, it's incredible how broken this is and yet still works. First, as you pointed out, your calculation has a logarithmic divergence, which needs to be covered up somehow. Second, correct if I'm wrong, but those i epsilon terms are there to move the poles off the real axis with no justification other than it makes the calculation possible. Third, these diagrams describe terms in a perturbation series which, like essentially all perturbation series, diverges if you take enough terms. To recap, there are three (to my mind) solid reasons not to trust this... and yet it works. No wonder Feynman said to not bother trying to figure out what quantum mechanics really means.
It's not that broken: 1. The bare parameters of the free Lagrangian are themselves nonsensical in an interacting theory, so these unrenormalised parameters lead to divergences 2. This can be defined reasonably rigorously by switching to Euclidean time and adding a vanishing temperature (moving the time contour rather than the poles) 3. At least for QED, the series is roughly asymptotic in that higher order terms decrease in magnitude, so it makes predictions that seem to be very accurate for now Although I'd agree, QFT does not have a formulation that I'd both mathematically rigorous and useful qualitatively
@@twistedsector About your third point, yes, the magnitude of each term decreases, but (I believe) the number of diagrams becomes so numerous that it more that counteracts this, though this might not be until 137th order.
Hey im 14 years old and I go to College high school and a advanced math program and I wanted to know your opinion of how to manage study time in these kind of situations by the way I really like your content on TH-cam even if I cant understand the more advanced stuff
Hey Andrew, have you ever considered setting up a discord server? I'm sure a lot of people would join instantly and there you could set up some moderators. Of course, I'm not saying you should. You're a busy man, but if you have considered it or at least want to in the future, please reply here so I can know
Tbh, yeah, but I do get the advantages of tablet and realize I’m probably in the minority. But I feel like the whiteboard is more engaging and easier to follow, rather than just seeing writing appear on the screen with your icon in the top corner. Ya know?
I am a Great fan, and wanted to ask a little favour. I am 3rd year B.Sc physics student and want to do a project in theoretical physics. can you suggest something?
I was wondering if there was any notable physics books anyone would recommend. I've been interested in studying physics, but I lack a sizeable wallet to study it within college. Thanks in advance! Gabzi
I think I remember you recommending "QFT and the standard model" as a good book for self study in QFT... Is this still your top recommendation, or do you have something else?
@@AndrewDotsonvideos basic ones, scatering of electrons, electromagnetic interactions,....with special enphasis on symmetry factor...there is no " pedagogical material ",,,about this point, and articles in pdf, are from experts ...for expersts in the matter...physics fans ...keep out
Hey Andrew. I am about to start at a university in the Spring to major in physics, but I am really nervous about student loan debt. What is your opinion on how much student debt you should be in for a physics major?
Andrew how long in total (from undergrad school to grad school) did it take you to earn your PhD? • • • If you answer this, thank you a lot I really appreciate it.
Today I saw someone putting together some sort of circuit and I instinctively said "Found the experimentalist"..... I'm not even a physics student..... will I ever recover?!!?!
"this is aimed more for those who aren't far along enough in their studies..." I got a C in Algebra Based physics 1. The third time I took it. I think I'll be just fine *finger pistols*
Says he is very careful about how he states things ... consistently calls a diagram a process 😁 Classic physicist style - just like in group theory, physicists don't know the difference between a thing and its representations 😂 (💖 with brotherly love - Math-Gang)
I don't really understand the point of this comment. I took 3 minutes out of a 27 minute video. This isn't a video only talking about the tablet, in fact most of it doesn't even mention it.
@@AndrewDotsonvideos It's not a big deal. Honestly, I expect that more than a couple of viewers of this channel are going to be teaching some day, so a review of a potentially good utensil or manufacturer isn't even that far out of order, imo. But I'm sure they asked you to do/say some particularly cringey things and/or you would've liked more time to get to know it, so fair play. If you **do** decide to do one, make sure you give us a reasonable idea of its limitations and how it stacks up against similar products and it should be fine and dandy. cheers TMI part: I didn't know about how little time you'd spent talking about it because I'm still looking forward to watching this later in the week. But the title mentioned it (and I don't really understand the point of it doing so :p), and you were already pretty nice about it after the video on deriving Noether's Theorem, for someone who "doesn't do reviews".
Me: Hey, hey, my brain....can I focus right now, please? I still have a lot of chem stuff to do today. My brain: Oh, here's da thing....NO! u can't do dat! bt wut u can do s u can watch dis vid dats 27 mins long n den too u 'ave some time left for prepping for the haloalkanes & haloarenes test. Me: Well, I also have 2 pending genetics classes that I missed & then another E&.... My brain: Shut the f up! Me: What am I thinking? I got like, what 15 hours to finish all that? 27 minutes are like 3% of 15 hours? We can still approximate that to 1st order and then that's just 1%? That's nothing! Yeah, 15 hours are more than enough. Who needs a week of preparation? Thanks brain.
0:06 I don't think the penguin diagram is labeled correctly.
Yup, you’re right. When I googled “penguin diagram” to rip a picture for the video, I chose the first one I saw and didn’t even bother to check it. Thanks for pointing that out.
One of the anti-tops should be a top
@@AndrewDotsonvideos Maybe it's a top that identifies as an antitop?
🤙🏿
Don’t worry for every QPT (quantum penguin theory) there is a flipper symmetry so it works out.
2nd. Sooooo close! Is it just me - or did one of the diagrams on the white board look like a dog? Happy Thanksgiving Kelly & to the best son ever!! ~ Love, Mom 💕
Maybe someone loves him more than you 😏🤐
lol just kidding
hope u come first soon
You are such a loving mom congrats Dotson
@@meowwwww6350 - Happy Thanksgiving!! ~ Andrew’s Mom 💕
@@maureendotson4634 Happy Thanksgiving ma'am!!
@@SK-qc2hb - Happy Thanksgiving. Stay safe! ~ Andrew’s Mom 💕
After a hard day of GR i'm taking , what makes the day better is
1 Andrew's math derivations
2 Alex Flournoy mathematical methods
thanks , you are the hbar .🖐
Alex Fournoy has the best videos
Last time I checked your anatomy, I noticed you were underweight. Gotta give you one more Happy Meal from time to time.
He’s not underweight, he just trimmed his beard
I never truly recovered from Andrew my fat (dot)son
@@AndrewDotsonvideos Puppy fat from mums cooking melts away when your diet consists of ramen and a side order of low level panic.
Ah, how I miss my 20’s. 😂
@@gr00veh0lmes haha my ramen days started recently 😂
@@gr00veh0lmes haha..dental school had lots of panic..oooo the memories.
Thanks, Andrew, for taking things into a slightly more advanced direction with your content.
:)
th-cam.com/video/u1LdsYhTgPI/w-d-xo.html Delta function
Me: Has to study fluid mechanics.
Also me : Better watch a 30 min vid on Feynman Diagrams
its all Lagrangian and Eulers Eqns
Peskin and Schroder is an advanced undergraduate to graduate level and beyond textbook. As a student of applied mathematics, I find it extremely helpful. But for beginners, novices, and undergraduates. McMahon's QFT Demystified, Zee's QFT in a nutshell, and Schwichtenberg's QFT are good places to start. I discovered several new equations combining QFT and molecular biology in 2003 and am finally publishing my discoveries. Pray for me and keep on learning.
Ah, this came just in time. Now I can finally compute the momentum of this relativistic turkey field 🦃. Thanks, Dotson 👌
turkeys minimally couple to stuffing and never forget that
but self-energy is not the same as the energy you add to yourself
Breakdown of Audience
2% people who actually know physics
10% Tensor Ninjas honing their skills
69% people who just kept on watching the channel after seeing meme reviews
19% Andrew’s grandma rewatching videos
I know I'm coming late to this, but I have to comment. I've never had math or physics beyond B.Sc (Comp Sci) level. I've seen Feynman Diagrams for years in popular media (Scientific American, etc.) and had a vague general understanding that they aided calculation of probabilities, but I'd never seen an explanation of the mechanics of how it's actually done. So this was extremely interesting. Thank you, Andrew, good look with the dissertation.
Tensor boi back at it againn
Am so happy I found this channel 😌 you literally magically post everything that I need😇😇
I'm a simple man, I see Feynman, I click.
I am fond of you simply man grammar.
@@randomblueguy Thank you kind man
Man, you inspire me so much to start studying physics! I’ve always loved maths and understanding how our universe works but, despite all that, I graduated in mechanical engineering instead (poor choice 😫). However, there are no schools near where I live and, even if there were, I wouldn’t be able to afford it.
Hope to, someday, enroll in physics when I move out and maybe have the same level of understanding that you have in physics...someday😢.
Thank you so much for these videos and feeding my dream/passion!
If anyone's into condensed matter, then Mattuck's _Guide to Feynman Diagrams in the Many-Body Problem_ is a really good read. It's definitely one of the best introductions to Feynman diagrams out there in my humble opinion.
This was an incredibly cool video! Feynman diagrams are absolutely awesome and Renormalization, while epic, is difficult as hell! Thanks for this video! 👍
All I see is a fine man drawing Feynmans
Andrew please upload more videos on qft and strat a new series qft explained for beginners in which you go from basics to calculating feynman diagrams please
Eventually!
@@AndrewDotsonvideos thank you dot boi!! Thank you! !
You are my idol next to Feynman for making these videos! I have read and understood P&S back to front, but your videos are still entertaining
Thank you!
I took this course last year but dropped out once the pandemic happened. It's a course simply dedicated to learning Feynman diagrams for nuclear reactions. I'm thinking of taking it again before going into my Masters because it seems like a useful skill for a Physicist to have. Problem is the fact that ten different people will learn ten different rules and notations.
If you are using an external mic you can use an audio plugin to cut the computer fan noise when you aren’t talking. I use fab filter pro g which is a gate plugin but there’s a lot more plugins in the market for the same use! So In your case, every time you stop taking the plugin Will turn on and in sense compress the audio signal to zero and then turn off when you start talking again!!
Holy cow not two days ago I just starting studying Feynman diagrams on my own, what amazing timing
my boi covering the feynman diagrams, thx so much
I’m just trying to pass calc 1 man...
DONT FORGET + C!!!!
if you don’t get that now, you’ll get that once you get into integration
My course is slightly accelerated, but I haven’t forgotten it yet! The one thing I made sure I didn’t lose points on during our third exam 😂
I am only an Alevel Student but I enjoyed what ever it was 😄😄
more videos please!
That's truly amazing Andrew 😰
Can you please please please please do a video on Algebra 2 , I'm in high school and I absolutely love watching your videos ,
Feynman diagrams are so beautiful!!
You know I quit being a medical student coz I was required to pass a physics exam. And yet am subscribed. I like that words are being said and I don't understand shit. As a literature student it's an insane pleasure. It's just like sitting in my philosophy lectures. Just amazing.
This is like the best physics video on TH-cam; keep up the great work!
How the hell are you getting out of papa flammy' s basement.
I stole his tablet and ran back to the basement to make a video
@@AndrewDotsonvideos 😂
@@AndrewDotsonvideos Give it back you god damn snitch
A great Thanksgiving giving gift even if I’m not 100% sure what Andrew’s talking about :)
Hey, great job explaining this idea! I understood a lot more of the video than I usually do
Awesome!
I have to say, the section switching flashbanged my eyes
Hahaha sorry
@@AndrewDotsonvideos San, anything for QFT!
Best way to kick off thanksgiving! Have a good one (:
You too!
I am an 11 year old kid watching this, and literally my brain melts
I just said that I needed a miracle 😳
Awesome Explanation!
Why do you only have 177K subs, just Lorentz boost to 1.7M lol
It's a lorentz scalar :')
That is the most perfect response lol
13:02 "he sure does" lol you just couldn't help it, could you 😂
This stuff is pretty beyond me but I just wanted to compliment you on your hand writing.
Im not even a even a physics major, im a bio major. I don’t know why ive binged like half of your videos lol
Awesome n much fun to watch
Great video! Thank you!
I am a feyn man, I see Feynman, I click
This is art
27 minutes YES PLEASE, how come youre not on twitter Andrew?
Not big on social media
Fair enough man I agree. I dont have Facebook, Instagram or snapchat either but twitter is brilliant
I like the editing
Get a load of THIS guy
I wish you'd take a qft course
Really good content as always !
This video thaught more than my first 2 years of physics education
Hey man make a video on how can we go from Bsc physics to Phd.Please
Happy thanksgiving!
Loads of love from india to andrew
Love you andrew
Just one question......
Can a moving charge can have both electric and magnetic feilds??
Yes.
An electric charge is accompanied by an electric field, by definition. If that charge is also accelerating, there will also be a magnetic field.
@@riccardoorlando2262 It doesn't need to be accelerating, just moving. Magnetism is a relativistic correction to electricity. That is why magnetic fields are only generated by moving charges and only affect moving charges (classically speaking; charged particles with spin is a different can of worms).
@@tomkerruish2982 Sigh.
*Picks up E&M*
Ah shit, here we go again.
@@riccardoorlando2262 Well, that's how I learned it in college. First, they taught us special relativity, which we then used to derive Maxwell's Equations. (Okay, we started with Gauss's Law and maybe some other stuff; it's been nearly 35 years.)
woah, i just noticed you write lowercase "a"'s in the cool way (like me). when did u start doing that?
I thought the exponent on scalar theory (Φ³ , Φ⁴ …) meant the number of incoming and outgoing legs, i.e., Φ⁴ has 2 particles incoming and 2 outgoing, and Φ² just 1 particle incoming and 1 outgoing.
Oh no, I’m sorry, it’s the Green function of n points the one that dictates how many external legs your diagram will have: Φ⁴ using a Green function of 4 points means 4 external legs, right?.
Also there is a constant next to the Φ (it is often λ or g, i.e. λ Φ⁴/4!) and I understand the number of vertex your diagram will have depends on the order of that exponen you work with (λ² means you’ll have 2 vertex).
Is it okay to prove the vertex interaction from the extra term in the minimally substituted QED Lagrangian?
Where psi bar is the final state and psi A is the initial state for a fermion whose path is changed by coupling with a photon?
Ie is this extra term the amplitude for this interaction?
Do you have any references (maybe pdf links?) that illustrate calculations in more complicated QFTs?
I’ll try and find some and post them later
@@AndrewDotsonvideos Great, thanks.
I've never taken a course in QFT, but I've leafed through some texts on it, which is pretty much equivalent, right?
At any rate, it's incredible how broken this is and yet still works. First, as you pointed out, your calculation has a logarithmic divergence, which needs to be covered up somehow. Second, correct if I'm wrong, but those i epsilon terms are there to move the poles off the real axis with no justification other than it makes the calculation possible. Third, these diagrams describe terms in a perturbation series which, like essentially all perturbation series, diverges if you take enough terms.
To recap, there are three (to my mind) solid reasons not to trust this... and yet it works. No wonder Feynman said to not bother trying to figure out what quantum mechanics really means.
It's not that broken:
1. The bare parameters of the free Lagrangian are themselves nonsensical in an interacting theory, so these unrenormalised parameters lead to divergences
2. This can be defined reasonably rigorously by switching to Euclidean time and adding a vanishing temperature (moving the time contour rather than the poles)
3. At least for QED, the series is roughly asymptotic in that higher order terms decrease in magnitude, so it makes predictions that seem to be very accurate for now
Although I'd agree, QFT does not have a formulation that I'd both mathematically rigorous and useful qualitatively
@@twistedsector About your third point, yes, the magnitude of each term decreases, but (I believe) the number of diagrams becomes so numerous that it more that counteracts this, though this might not be until 137th order.
Hey im 14 years old and I go to College high school and a advanced math program and I wanted to know your opinion of how to manage study time in these kind of situations by the way I really like your content on TH-cam even if I cant understand the more advanced stuff
You are 🔥
no, u
Sorry, once I didnt understand... What ec
excactly was calculated with the Feynman-Rules? Self energie?
Where can I get a complete lecture series on QFT that's pretty easy to understand I have read say -Sakurai?
Not sure yet if I like being taught more by right-chiral dotson or left-chiral dotson...
Hey Andrew, have you ever considered setting up a discord server? I'm sure a lot of people would join instantly and there you could set up some moderators. Of course, I'm not saying you should. You're a busy man, but if you have considered it or at least want to in the future, please reply here so I can know
I want to but I really just having taken the time to learn how it works
Will you ever return to videos at whiteboard or will it be the tablet forever?
Do you prefer the whiteboard?
Tbh, yeah, but I do get the advantages of tablet and realize I’m probably in the minority. But I feel like the whiteboard is more engaging and easier to follow, rather than just seeing writing appear on the screen with your icon in the top corner. Ya know?
I enjoy watching your videos but so far this is above my "smart" level .
bro i wanna be like U when I grow up
im only here for andrew's handwriting
I am a Great fan, and wanted to ask a little favour. I am 3rd year B.Sc physics student and want to do a project in theoretical physics. can you suggest something?
I was wondering if there was any notable physics books anyone would recommend. I've been interested in studying physics, but I lack a sizeable wallet to study it within college.
Thanks in advance!
Gabzi
He always says "what's goin' on smart people", but no one ever says it back : (
I think I remember you recommending "QFT and the standard model" as a good book for self study in QFT... Is this still your top recommendation, or do you have something else?
Still my go to.
@@AndrewDotsonvideos thanks
About time!
¿ could you teach those feynman diagrams in andrew style?....would be fantastic !!!!
Which diagrams?
@@AndrewDotsonvideos basic ones, scatering of electrons, electromagnetic interactions,....with special enphasis on symmetry factor...there is no " pedagogical material ",,,about this point, and articles in pdf, are from experts ...for expersts in the matter...physics fans ...keep out
Another video of
"I don't understand what the hell is going on" 😂
Hey Andrew. I am about to start at a university in the Spring to major in physics, but I am really nervous about student loan debt. What is your opinion on how much student debt you should be in for a physics major?
How u doing Andrew?
We out here just preparing for my oral exam
@@AndrewDotsonvideos Haha, you said "oral".
Andrew how long in total (from undergrad school to grad school) did it take you to earn your PhD?
•
•
•
If you answer this, thank you a lot I really appreciate it.
God-like
Introducing: The Dotson Lectures
My bosons are never this wavy :/ they're more like a saw, won't even talk about the gluons
The one dislike is Andrew himself
Or flammable maths
Today I saw someone putting together some sort of circuit and I instinctively said "Found the experimentalist"..... I'm not even a physics student..... will I ever recover?!!?!
_Feynman Rules!_
_rename K, E K_
"this is aimed more for those who aren't far along enough in their studies..."
I got a C in Algebra Based physics 1. The third time I took it. I think I'll be just fine *finger pistols*
Says he is very careful about how he states things ... consistently calls a diagram a process 😁
Classic physicist style - just like in group theory, physicists don't know the difference between a thing and its representations 😂
(💖 with brotherly love - Math-Gang)
Andrew, how are you, man?
Le me: hasnt even done University Physics modern physics section
I didn't know Ben Affleck was doing a Physics PhD
Hi Ben Affleck
No one:
Andrew Dotson: ı
“I don’t do product reviews on this channel...”
I don't really understand the point of this comment. I took 3 minutes out of a 27 minute video. This isn't a video only talking about the tablet, in fact most of it doesn't even mention it.
@@AndrewDotsonvideos It's not a big deal. Honestly, I expect that more than a couple of viewers of this channel are going to be teaching some day, so a review of a potentially good utensil or manufacturer isn't even that far out of order, imo. But I'm sure they asked you to do/say some particularly cringey things and/or you would've liked more time to get to know it, so fair play.
If you **do** decide to do one, make sure you give us a reasonable idea of its limitations and how it stacks up against similar products and it should be fine and dandy.
cheers
TMI part:
I didn't know about how little time you'd spent talking about it because I'm still looking forward to watching this later in the week. But the title mentioned it (and I don't really understand the point of it doing so :p), and you were already pretty nice about it after the video on deriving Noether's Theorem, for someone who "doesn't do reviews".
Me: Hey, hey, my brain....can I focus right now, please? I still have a lot of chem stuff to do today.
My brain: Oh, here's da thing....NO! u can't do dat! bt wut u can do s u can watch dis vid dats 27 mins long n den too u 'ave some time left for prepping for the haloalkanes & haloarenes test.
Me: Well, I also have 2 pending genetics classes that I missed & then another E&....
My brain: Shut the f up!
Me: What am I thinking? I got like, what 15 hours to finish all that? 27 minutes are like 3% of 15 hours? We can still approximate that to 1st order and then that's just 1%? That's nothing! Yeah, 15 hours are more than enough. Who needs a week of preparation? Thanks brain.
Get a load of THIS guy