Writing more efficient code

[Beliavsky]

If in the newsgroup comp.lang.x somone asks how to do y, and you
suggest using language z, without answering their question, which was
how to do it in x, you will likely just annoy people and perhaps make
it even less likely that they will try z.

I have my own favorite language z and have not always heeded the above
advice, but I think the principle is still correct.