I haven’t experienced cocaine. I haven’t ever seen cocaine (IRL). Nevertheless I think I have a decent grasp of what it is, how it works, how it affects people, and what I could (mis)use it for. Would you imply that my knowledge of cocaine isn’t true/real/useful? Is snorting a line the only way to reify the knowledge? (The answer is: the indirect way of obtaining information is sufficient for building a correct/useful/accurate world model, and there is no such thing as direct experience anyway - it’s signals coming down the wire all the way down.)