I'm pretty certain you guys on the React team have lots of increasingly clever ideas to speed up the diffing, not limited to actual functions browser vendors co

I'm pretty certain you guys on the React team have lots of increasingly clever ideas to speed up the diffing, not limited to actual functions browser vendors could add in native code that could speed this stuff up. Generally React is 'very fast' to 'fast enough'. A very admirable situation to find yourselves in :-)