Here it's framed as with regards to perspective and projection, the geometry, and motion. The observer has a perspective according to a projection, what are observables, measurables, and what the senses, can sample, as for the sampling, measurement, and observer effects. There's the intromissive, or passive, and the extromissive, or the active, in that. Then, that's phenomenology and the instrumentalist view, while, then to answer your question, the notion that there exists things without an observer, is usually called "Platonism", in philosophy, and "realism", in physics. An observer then is mostly considered as what's as well an actor besides merely a detector, as with regards to, for example, the instrumentation of a detector and its interpretation, or, the objective view, of any sort reasoner.
Can anything exist without an observer? What is the definition of an observer?
Here it's framed as with regards to perspective and projection, the geometry, and motion. The observer has a perspective according to a projection, what are observables, measurables, and what the senses, can sample, as for the sampling, measurement, and observer effects. There's the intromissive, or passive, and the extromissive, or the active, in that. Then, that's phenomenology and the instrumentalist view, while, then to answer your question, the notion that there exists things without an observer, is usually called "Platonism", in philosophy, and "realism", in physics. An observer then is mostly considered as what's as well an actor besides merely a detector, as with regards to, for example, the instrumentation of a detector and its interpretation, or, the objective view, of any sort reasoner.