Having done this for a number of years now, I’d argue that your first point is based on a false premise. Adding each thing one at a time feels slower because yo

Having done this for a number of years now, I’d argue that your first point is based on a false premise. Adding each thing one at a time feels slower because you don’t get the frantic rush from doing 16 things at the same time on a tight deadline, but most of the time end-to-end it takes the same amount of time or less, because when something does break it’s super easy to look at the one thing you did and fix it without having to suck in the entire context of the 16 things. If you’re doing all 16 at the same time and they’re not one liner trivial things, how do you even know where exactly the 8 from your divide-and-conquer strategy are? And can you actually back them out without further breaking things?