One of the great skills in using any language is knowing what not to use, what not to say. There's that simplicity thing again.

The lesson is: Even if you know exactly what is going on in you system, measure performance, don't speculate. You'll learn something, and nine times out of ten, it won't be that you were right!!

When we use a language, we should commit ourselves to knowing it, being able to read it, and writing it idiomatically.

If there's only one answer, then this must not be a very interesting topic.

Simple, not easy. There's a difference.

It seems to me to be important to distinguish a good idea from poor implementations of it

The wages of sin is debugging.