I am new to all this, and i just read the article on Subjective Reality and decided to post here.
For me personally the biggest proofs against this theory are;
a) My Parents
b) The Internet
a) The fact that i didnt imagine my parents into being, i didnt create them with the power of my (infant) mind, rather they created me. This would show that i am not the only concious human being on the planet, nor am i 100% responsible for my own reality.
b) Secondly, the Internet, has given Mankind one of the greatest ways to interact with each other- no matter how powerful my mind, i could not have imagined and created such a concept on my own.
p.s. i believe Steve Pavlina to be a real person with his own thoughts/ideas sperate from my own, and not merely a manifestation of my consciousness
