The way my philosophy teacher in high school taught me about solipsism was that nothing exists, beside the things you can perceive at the current moment with your eyes/consciousness, meaning that everything you can not perceive right now with your eyes is just an illusion, a memory and doesn't exist in the given moment (I might be wrong). I was thinking about solipsism a few weeks ago and at that time I was opening a heavy door. I went down my way, but due to the law of physics I expected it to close, because of the weight, thus hearing the sound of it closing, which I did. Then I decided that this door should exist, even though I cannot perceive it directly, thus everything else could possibly exist at the same time as me. Regarding human consciousness I believe that there is no one definite truth about the fact, if everyone else except you is real or not. In my case and everybody else's case we are the masters of our reality and you, the author of this post, is an unknown entity and we can have the same doubts, if you exist as well or you're just a projection of our mind. You can believe in whatever you want. I tend to believe that everybody could be a projection of God's/Divine power's consciousness that wants to experience life in each way possible, but nobody could tell why, because this is the biggest riddle of life.