They don't really contradict. That FOO and BAR look similar, does not mean they share some "truthfulness". Prematurely reaching to deduplicate and abstract them

They don't really contradict. That FOO and BAR look similar, does not mean they share some "truthfulness". Prematurely reaching to deduplicate and abstract them may lead to issues when you realise they aren't actually as similar as you thought, then you end up handling edge cases that wouldn't exist if you just kept the things separate to begin with.