What does Tech breakthrough in this context means? And what tech breakthrough came from Facebook?
Is something like HHVM considered a tech breakthrough?
Automated self driving cars considered a tech breakthrough? (most probably)
Is something like HHVM considered a tech breakthrough?
Automated self driving cars considered a tech breakthrough? (most probably)
A largely backwards source-compatible, JIT'ed interpreter for one of the world's shittiest designed but most widely deployed languages? That runs the frontend fleet for the #2 site on the Web? While supporting new core language features and extensions? Yes, I would say that's a breakthrough in interpreter implementation, and thus tech.