Non-existence

[Jon Paul]

No. Solipsism states that the mind exists. In our minds, we experience a universe. One way or another, the universe is there. If it is inside our minds then our minds fabricated the entire universe and all of its wonder and complexities, then forgot about doing this and began experiencing the universe in 1st person as an agent of it. If it is outside of our minds, we are agents of it and can learn to know it- even if without certainty. In both cases, we are only sure of the mind. In the former case, there is an immense amount of complexity assumed.

No. Solipsism solely states that the mind exists. It does not state anything else. It is the most reduced ontology, because it does not state that reality exists, and positing the existence of reality is more complex than not doing so, but the mind exists in either case and is unescapable.

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Again, no. An objective universe is less complex than a universe imagined by a being which went on to forget this imagination and began living in this universe and interacting as if it were an agent of it. The assumptions leading from solipsism are either a self-contained imaginary world or an objective, outside world. We cannot claim knowledge either way, but one of these ideas is far more complex.

That solipsism does not seem to be feasible or likely given the knowledge we derive from sense-data about the universe, does nothing to say anything about the amount of complexity it proposes. For that sense-data and those intuitions about the world would exist even if solipsism was false, and reality existed. The difference would be that on top of the sense-data in your conscious mind, everything that sense-data records would be actually existing outside your mind, ON TOP of your conscious mind, which is far more complex.

What you are talking about is the absurdity and counter-intuitiveness of solipsism of course. But that is not a rational ground for rejecting it, nor for calling it complex. It posites only 1 ontological entity and reality: your conscious mind. Realism and the belief in other minds posites the existence of a 100 billion ontological entities alone in the number of conscious minds we know to have existed; and many more in the number of unconscious entities that are real.