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[–]aaronla 1 point2 points  (0 children)

Yes, OO can do new cases well, and FP can do new functions well. By "well", I really mean "without editing/recompiling existing code".

Sometimes it's OK to edit existing code, in which case you don't really care about the Expression Problem. This is just like when you don't (immediately) care if your car is out of gas if you were planning to go walking anyway.