I’m trying to put together a GUI stack for my IDE and a few other related tools. And I found myself looking at HHVM, Hack, React, and Flux. I’m sure they are all fine technologies and they play for large enterprises. It’s the one reason that most large corporations pick some tech, or build their own, and try to stick with it.I’m not a PHP fan and hack, as a derivative does not take me to a happy place. I suppose if I wanted a job at Facebook I would get as deep as I could. I was surprised, however, while FB is in business to make money, it is still a toy, and yet smart people work there. I wonder if they are on-par with Google and Amazon? I also wonder if they are worried about the fate of their business based on tech decisions?