[jdcarter]

Precisely: language/library/framework decisions affect the whole team. If you choose something weird, you'll quickly be cursed under your teammate's breaths--if not get screamed at to your face--because eventually they're going to need to work on your code, too.

That's not to say you can't bring new technologies into a company. I've done it several times. You just need to understand that it's a big undertaking to get an entire team to buy in and learn that new tech.

Of course for hobby projects, go hog wild. That's how I pick up new languages.