Earlier quoted context omitted.
It wasn't a good analogy. For one thing, toddlers don't tie their shoes: the average age for learning to tie your shoes is 6 years old. And it's not clear that kids will learn for themselves if you give them a few hours. We're not talking about letting junior engineers struggle for weeks or months, but they can bang their heads for a few hours or maybe even a few days and figure out a lot of things for themselves. Th…
I don't think you get it. Letting a junior engineer bang their heads for a few days on something you could show them in ten minutes is just a waste of time and money. In my experience there are PLENTY of real problems for them to solve, things I DON'T know the answer for.
Not every problem is going to take junior engineers days to solve for themselves. I was stating an upper bound of how much rope to give them, not an average.
Besides, what happens when the senior engineer leaves the company? Sometimes "institutional knowledge" walks out of the institution.