It is also a lifesaver for complicated fiddly array index code. One of the most cognitively costly thing for me, decades into programming, is still anything related to array partitioning, or remapping indices. Copilot pretty quickly just gets what you’re trying to do and auto fills a correct line of code. It’s basically never wrong about this sort of thing. And even in the rare case where it’s not correct (usually because it’s mistaken about what I’m trying to do), it’s much faster for me to read the line and figure out what it does than it is to mentally slog through the problem and write the line from scratch.