Ask it to write code that replaces every occurrence of "me" in every file name in a folder with "us", but excluding occurrences that are part of a word (like medium should not be usdium) and it will give you code that does exactly that.
You can ask it to write code that does a heat simulation in a plate of aluminum given one side of heated and the other cooled. It will get there with some help. It works. That's absolutely fucking crazy.