The lesson or lessons to be learned are best learned, rather than talked about.
Still, there are things you can say about the relationship between shooting and editing. One can trade care in shooting for care in editing later. This is obvious but the extent to which it is true is pretty surprising.
This has obvious implications for the work of Winogrand and Maier, at least. What appears to be skill in shooting is, one can learn via my experiment, actually skill in editing. Again, obvious except for the degree to which it is true.