Human developers by their very nature are probabilistic. Probabilistic is NOT deterministic. Which means the manager is never really sure if the developer solved the problem, or if they introduced some bugs, or if their solution is robust and ideal even when it seems to be working.

All of which is beside the point, because soon-ish LLMs are going to develop their own equivalents of experimentation, formalisation of knowledge, and collective memory, and then solutions will become standardised and replicable - likely with a paradoxical combination of a huge loss of complexity and solution spaces that are humanly incomprehensible.

The arguments here are like watching carpenters arguing that a steam engine can't possibly build a table as well as they can.

Which - is you know - true. But that wasn't how industrialisation worked out.