A Twin Earth Thought Experiment - Water Is Not H T H Two O

Two propositions are actually contradictory in a way that is beyond our understanding or comprehension. Am, i don't, i personally don't buy that, um. And part of it is because I'm not what you'd call a semantic externalist. So let me try to do some kind of, like, super hasty, reckless reductio and then you can shoot it down. Um, you no, you know, the m a twin earth thought experiment. You know, water is h t h two. O, but what if it were on twin earth, it's x, y z? Ok.