How to Stop Voodoo Programming

How to stop? Don't throw in gems like mad. With every gem (or egg, or module, or anything in other languages) you give control over errors to somebody else who you don't know and who doesn't know you gave it to him. Sometimes it might be worth to do so, but often it's not.

Not to mention unnecessary steps when deploying the application. (And no, gem install is not a sensible thing to do for production deployment.)