Nothing wrong with creating rounder wheels; especially for training. I was at a conference where a panel of scientists were discussing how they manage research

Nothing wrong with creating rounder wheels; especially for training. I was at a conference where a panel of scientists were discussing how they manage research in their labs, and how to promote better productivity from their students with a focus on high-throughput methods. At this point, a single scientist on the panel interrupted with "we shouldn't focus on training for these intellectually bankrupt approaches, I'm interested in training scientists who can think." When I was first learning to code I was completely overzealous with performance optimization and I implemented every single data structure and algorithm myself, from scratch. This included a lot of computer vision, and optimization and fitting code, and studying books like Numerical Algorithms, etc. While not efficient, I sure did learn a lot.