I don't agree, if you understand how the tools work (and if your mind is sharp
), then you can think through possible sequences and determine what would be the best way to solve your problem. If you just know how to use the tools but don't know why, you'll only go so far and then be stuck. Then you'll have to go all the way back again and try and understand it. Say for example, Ohms Law. If I didn't understand the relationships between voltage, current, and resistance, I could be in big trouble. What If I wanted to power an LED and I didn't know about current? I could say well R=E/I and I'll give this LED 1A of current (because I don't understand what is too much) and the LED will self destruct. Or, what If I would like to give someone a little zap of current and I give them 2A of current? Since, I didn't understand that could kill the other person!