"this is a thought, therefore thoughts exist" This is more of a tautology disguised as an argument, as the word "is" in that sentence already indicates existen

"this is a thought, therefore thoughts exist" This is more of a tautology disguised as an argument, as the word "is" in that sentence already indicates existence. So that sentence can be rephrased as "this thought exists, therefore thoughts exist". Well, yeah, but that's not saying much... also the premise is arguable, since what do you even mean by "thought" and "exists", and how do you know either? A bit more fundamental would be "experience is" (without trying to break up experience in to artificial distinctions like "thought" and "non thought").. better yet is just saying "is" or pointing, and best is simple silence and basking in existence itself.