 And these error messages, they're super obscure, right? And GPT-4 just kind of knows it's like, oh, yeah, you know, you forgot to use the nest async IO library in Jupyter. You know, like that level of sophistication is now starting to be possible. And so there's just a lot of like just common mistakes, but also now common patterns. And, you know, sometimes even just creative ideas like my favorite application actually of GPT-4.