> It seems sad that so much effort should be made to keep old technologies going, I strongly disagree with this part. To make progress as a technological civil

> It seems sad that so much effort should be made to keep old technologies going, I strongly disagree with this part. To make progress as a technological civilization, without constantly wasting time reinventing things, we need to keep old technologies working. So, if Docker keeps that Rails app from 2007 running, that's great. And maybe we should still develop new apps in Rails, Django, PHP, and the like. It's good to use mature platforms and tools, even if they're not fashionable. That word "fashionable" brings me to something that really rubs me the wrong way about this piece, and our field in general. Can we stop being so fashion-driven? It's tempting to conflate technology with pop culture, to assume that anything developed during the reign of grunge music, for example, must not be good now. But good technology isn't like popular music; something that was a good idea and well executed in 1993 is probably still good today. Besides all that, as others have explained, platforms like Kubernetes have other advantages over just dropping a self-contained binary on a Linux server.