That's a big part of it, but there are also several areas where we're trying to innovate on functionality as well as speed. I'd personally be pretty disappointed if the only thing we had to offer at the end of all this was a type checker where the only value add was speed. We've also got first-class support for intersection types, and quite a different model to other type checkers regarding when and whether redefinitions are allowed, for example. We believe there are significant areas where typing can be made more usable and easily adoptable than it is today.

We'll also discover your venv if you: - Activate it manually (`source .venv/bin/activate`, etc.) - Set the `VIRTUAL_ENV` environment variable - Or use a command such as `uv run` or the equivalent from pdm/poetry/hatch to run ty (these project managers usually implicitly set the `VIRTUAL_ENV` variable to point to the project's virtual environment before executing any commands)