Comment by naasking

> It means if something-- anything-- is in the act of reflecting about thinking-- that is, reflecting about thinking about anything at all, including questioning existence-- then that thing exists only in that it is an entity capable of reflecting upon its own existence.

Still presupposing an entity. Why would a thought need an entity at all to think it? Don't you see that this is an implicit assumption that hasn't been justified? Why can't thoughts simply exist without a thinker? A thought can certainly refer to itself, much like a mathematical expression can be recursive.

Here's the fallacy free version: this is a thought, therefore thoughts exist. No entity implied or needed.