1) Industries don't learn; people do. We have a lot of turnover and growth in this industry, so a lot of new people. 2) Although there are high points of genius we may never reach again (Turing, etc), we are making progress. Software today can do things hardly imagined a few decades ago. 3) Part of how we make progress is to try "unlearning" things; throw out conventional wisdom and try something "crazy". Maybe it will fail the same way as before, or maybe this time it will work. Maybe the constraints that produced the conventional wisdom have changed. 4) People problems will always be hard, in every industry. Productivity is a people problem.
I am against a general ignorance of where the industry's been, which manifests as a refusal to learn basic software engineering concepts that are laid out in a book like the Mythical Man Month. Seems like every new medium (such as the web) starts with masses rallying around a figurehead who proclaims "this time it's different! We don't need any of that engineering stuff!" A few years later, they do.
This trend of anti-intellectualism is worrying. I doubt it's new -- Dijkstra had similar sentiments -- but the worst part is the developers who seem to enjoy being ignorant.
