It's not a black/white situation here. Being the boss, I know sometimes (most of the time, to be honest) we need to stick to proven and tested stuff, as economi

It's not a black/white situation here. Being the boss, I know sometimes (most of the time, to be honest) we need to stick to proven and tested stuff, as economic times are not the prettiest and clients that would pay for the extra mile don't just sit around. What happens when you assign 2 developers on a project that they are very passionate and enthusiastic about because you allowed them to use, say, node.js. Only to discover in a month or two that they spent 200 hours more that they would if they used something proven and tested. That's several k$ out of the window and maybe milestone not met. Sometimes it's worth it, sometimes it's not.