Hacker News Reader

But developing in JS is consideray slower than in Ruby, and time to market should be king.

On a mobile device, efficiency should be king... that's not exactly Ruby's forte

I'm skeptical of your first point as well

How does backend development reflect on mobile?

"Ruby could have been Swift"

Swift's raison d'etre is mobile development

> time to market should be king

Eh, not really.