Illusions are mental projections that have no effect on the world around us. I am tapping certain spots on this tablet that I use. Sending commands to type this message. Thus sending this message to the Internet. Then to you. I have sentience, and a diverse mind to provide multiple arguments. As apposed to your single argument. I think, interact with the physical world, and am smart enough to see that you have just updated to rules to say that I must only prove my existence. Arguments work both ways. If I cannot disprove your existence, then you are not allowed to disprove my existence. There for, by my superior knowledge about arguments, I exist. Accept defeat, you have already lost. And long before this comment. As your only claim thus far, even with different wording, is "you could be an hallucination, so you do not exist." You have changed the rules to set yourself up for victory in any circumstance. You have yet to counter my claims with another reason other then your "illusion" response. I exist one way or another, you have lost, and I claim victory. This fight, while long, was a simple one on my part. Game over and checkmate, I am done here.