First four things on the list are attention
> Doesn't for_tree(...) look a lot nicer and simpler and less error prone than needing to implement a recursive function for each operation you would want to do on a tree?
No it does not
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I know it sounds dumb but uv was smart to go shorter than pip and sapphire feels heavier than brew no matter what it does after typing that.
This seems like basic speculative attribution error- no research here.