Heh, they had "pico" in their list of editors. If one is really hellbent on using <i>that</i> for Hack/Obj-C in 2015, I'm not sure whether any argument is convincing enough ;)<p>Generally I wasn't really that impressed by the demo. Sure, the integration is nice, but I don't see how that's different from most other IDEs. But what struck me as a bit odd was the presenter stating a preference for vim, and then starting to edit Objective-C like all you've got is your cursor keys plus tab.<p>So, yes, another IDE, yay. And if you work at FB, sure, mindshare alone is probably worth it. But why would one give up normal mode/macros/elisp/abbrevs etc. for that?<p>Now don't get me wrong, I totally understand different preferences, and if your current editor is e.g. TextMate/Sublime or an IDE like PhpStorm/Eclipse/Xcode, I can see it. But if you start with the premise that vim is the One True Editor, why would <i>this</i> be the switch reason, whereas IDEs before didn't get you there?<p>No problem with another flower in the garden of editing, I just thought the sales pitch was a bit weird.