It's easy to underestimate that groundwork because it's less flashy or quantifiable. But skipping it usually just means C turns out half-baked, or takes even longer in the end
Just yesterday I was helping a family member install roofing. The roof was done up to slats, the roofing was big metal sheets, should be done in an hour. Except we spent good five hours on various little details before the first sheet was going up. And you cant exactly not do those, at least if you want the roof to stay there, and the weather to stay outside.
