I think pandas was so ambitious syntax wise and concept wise. But it got be a bit of a jumble. The index idea in particular is so cool, particular multi-indexes, watching people who really understand it do multi index operations is very cool.

IMO Polars sets a different goal of what's the most pandas like thing that we can build that is fast (and leaves open the possibility for more optimization), and clean.

Polars feels like you are obviously manipulating an advanced query engine. Pandas feels like manipulating this squishy datastructure that should be super useful and friendly, but sometimes it does something dumb and slow