Totally off-topic but I really dislike the phrase "Those who can do, do. Those who can't, teach."
It implies that teaching isn't a skill of its own. Some of the best football coaches were mediocre players (Alex Ferguson, Jose Mourinho) and some of the best players turned out to be very poor coaches (Steven Gerrard springs to mind at the moment). Can you only learn physics from someone who has made a world-changing discovery, or learn to write from a best-selling author? Or do you learn from someone who knows just enough to guide you in the right direction with enthusiasm and correct your mistakes in a way that doesn't make you feel like a failure?
What is correct is dogma in software development is a problem - software is too malleable and the world changes too fast to allow one set of ideas to dominate everything. That lesson hadn't even been thought about in the 90s though.
The implication I have in mind is that many of those who teach are doing it because they can earn $$$ better that way than by actually practicing what they preach.
Expensive consulting services, training courses, books, videos, etc. It's not about whether any of that stuff actually works; it's about essentially creating a religion and extracting profit from the gullible.
It implies that teaching isn't a skill of its own. Some of the best football coaches were mediocre players (Alex Ferguson, Jose Mourinho) and some of the best players turned out to be very poor coaches (Steven Gerrard springs to mind at the moment). Can you only learn physics from someone who has made a world-changing discovery, or learn to write from a best-selling author? Or do you learn from someone who knows just enough to guide you in the right direction with enthusiasm and correct your mistakes in a way that doesn't make you feel like a failure?
What is correct is dogma in software development is a problem - software is too malleable and the world changes too fast to allow one set of ideas to dominate everything. That lesson hadn't even been thought about in the 90s though.