you don't want your cofounders to go out of their "comfort zone" when it comes to learning an entirely new programming language & stack just for the sake of buz

you don't want your cofounders to go out of their "comfort zone" when it comes to learning an entirely new programming language & stack just for the sake of buzzwords AND building a startup at the same time. LAMP is a perfectly fine stack - they would have to "learn something new" if they were stuck with, say, COBOL, which is not exactly good tech for web development...