"Or, you know, spend a day knocking together your own blog in rails." Understood you're exagerating for effect, but underestimating the complexity of a process

"Or, you know, spend a day knocking together your own blog in rails." Understood you're exagerating for effect, but underestimating the complexity of a process like "blogging," over-estimating how much of it can be "simply" reëngineered, and dismissing the collective work of tens of person years is a real issue. I've witnessed that attitude cost businesses dearly. Just because you can do something doesn't mean you should. Just because you do do something, doesn't mean you didn't spend a ton more resource than was necessary. And because you spent more resource than needed doesn't mean you delivered the best possible result.