Paul Ford quotes Ullman, on coders endlessly feeling their way forward:
The corollary of constant change is ignorance. This is not often talked about: we computer experts barely know what we’re doing. We’re good at fussing and figuring out. We function well in a sea of unknowns. Our experience has only prepared us to deal with confusion. A programmer who denies this is probably lying, or else densely unaware of himself.