[stevedt]

Perhaps a better tag line would be "duplication is far cheaper than a bad abstraction".

The take-away from the article for me is if subsequent activity (the changes requiring parameters and if-branches) show it was or has become a bad abstraction, then undo the abstraction and re-introduce the duplication.

[js8]

Then, why not fix the abstraction instead?

[stepanhruda]

Sometimes you don't know what the right abstraction is yet, you only know it's not the one you have.