That's the crucial point, though, you wouldn't have trusted it without checking the source after all. My experience with 4o is that 4 out of 5 answers I check are wildly incorrect or entirely made up, while with the rest, if I copy my prompt 1:1 into Google, I get the same correct answer pretty much verbatim in result #1. So I don't understand how so many people still see this as anything else but a waste of time, an intermediary step before going to an actual, credible source -- a step which in the best case is entirely unnecessary, in the worst case dangerously misleading. (From my non-representative survey among friends, the answer may be that barely anyone checks the validity of answers, and are simply unaware that they rely on answers from a system which, except for some lucky cases, gives them wrong ones.