This is a common fallacy. If I say that going slow with the car is better than going fast, I am not saying that the optimal speed is 5 mph. In a CAD world, the

This is a common fallacy. If I say that going slow with the car is better than going fast, I am not saying that the optimal speed is 5 mph. In a CAD world, there is no reason to use pen and paper and a drafting machine. If I were to start learning technical drawing, how much time would I spend with the drafting machine? The answer is zero hours: there is no "market" for it (is there anyone who asks "please deliver without using CAD"?), it is not preparatory (as I wrote in another comment, is there anyone who is starting to learn how to play tennis using wooden rackets?), and it takes much longer to do anything with the drafting machine than using CAD. Learning addition and multiplication is preparatory and useful. Being a Luddite is rarely useful.