[waysa]

They don't say you shouldn't optimize at all. But before you do, check what your performance bottlenecks are, take measurements and start from there.

[dahfizz]

The issue is different people mean different things when they say "optimization".

For some developers, giving any consideration to the performance of your chosen architecture and data structures is "premature optimization"

[anonymoushn]

in current_year we've invented programming paradigms that can slow down all parts of the program equally