Every practice accumulates a set of details it trusts. The temptation is to carry them forward untouched — the junction worked once, so it will work again.
We redraw them anyway. Not because the first version was wrong, but because the second building is not the first one. The wall meets a different ground, a different climate, a different budget. Redrawing is how we find out which parts of the detail were principles and which were accidents.
It is slower. It is also the only way we have found to keep a detail honest.
