Not many articles make my jaw drop. Take the time to read the whole thing if you can.

Holy carp, this blew my mind.

So simple and elegant:

Programming is a way of thinking, not a rote skill. Learning about "for" loops is not learning to program, any more than learning about pencils is learning to draw.

People understand what they can see. If a programmer cannot see what a program is doing, she can't understand it.

I agree, worth reading to the end. Worth re-reading.