I don't think that's true if you learnt it properly the first time. I can still solve a quadratic equation, and I learnt that more than ten years ago and definitely haven't used it since.

I think there's a general rejection of knowledge, and software development has a continue cycle of reinventing the wheel because a large number of developers have no formal training. This something we are now celebrating instead of looking down on.

On the front page today there's separately a 'America needs to reject degree qualifications' and 'How do we get a certified certificate for developers'.....