> I need to think about optimizations from the start if I don't want to rewrite everything later Deep equality checks don't prevent the need for minor rewrites

> I need to think about optimizations from the start if I don't want to rewrite everything later Deep equality checks don't prevent the need for minor rewrites in other cases, like when you change a widely used type's definition. Rewrite code during optimizations or rewrite the project once Python isn't fast enough? I don't know, both can be very cumbersome.