>My "agile" estimate blew up by a factor of as much as 10, just because the ask was conceptually very simple
Please do not feel bad, nor let anybody make you feel bad about this. It's absolutely natural for this to happen. If anything you could use it to ask for a junior or intern to delegate implementation details while you dig further into the coal mine of this feature.
"Simple is hard." What you can learn from this (beyond team pushback) is what kinds of questions can be asked to figure out if a simple ask is masking 10 other things.
Please do not feel bad, nor let anybody make you feel bad about this. It's absolutely natural for this to happen. If anything you could use it to ask for a junior or intern to delegate implementation details while you dig further into the coal mine of this feature.
"Simple is hard." What you can learn from this (beyond team pushback) is what kinds of questions can be asked to figure out if a simple ask is masking 10 other things.