It might also be that when the deadline is deemed to be more important than the quality of the product, (which, in real life happens sometimes) the tradeoffs ar

It might also be that when the deadline is deemed to be more important than the quality of the product, (which, in real life happens sometimes) the tradeoffs are not made clear to all the stakeholders. Quantifying and communicating that line in a project where it goes from, "leave it out, it's not that big of a deal", to "if we don't do this properly/fix this it will be a huge cluster#&$%" is the definition of a good process/manager, I think.