You have first-person knowledge of qualia. I'm not really sure how you could deny that without claiming that qualia doesn't exist. You're claiming some middle ground here that I think almost all philosophers and neuroscientists would reject (on both sides).
> "couldn't something be H2O without being water?," "what if the universe was created last Thursday with false memories?," or "what if only I'm real?" These are dead-end questions. Like 14-year-old-stoner philosophy: "what if your red is ackshuallly my blue?!"
These are all legitimate philosophical problems, Kripke definitively solved the first one in the 1970s in Naming and Necessity. You should try to be more humble about subjects which you clearly haven't read enough about. Read the Mary's room argument.
> "couldn't something be H2O without being water?," "what if the universe was created last Thursday with false memories?," or "what if only I'm real?" These are dead-end questions. Like 14-year-old-stoner philosophy: "what if your red is ackshuallly my blue?!"
These are all legitimate philosophical problems, Kripke definitively solved the first one in the 1970s in Naming and Necessity. You should try to be more humble about subjects which you clearly haven't read enough about. Read the Mary's room argument.