> That is, to one without a hammer, nothing looks like a nail.

They irony of this is that for one with a hammer, everything looks like a nail.

The real problem is that programmers have spent far too much time worrying about efficiency in the wrong places and at the wrong times; premature optimization is the root of all evil (or at least most of it) in programming. Donald Knuth.

Knowing when to apply something is just as important as know where