I absolutely agree with you. But as a startup moving at full speed and burning through investment, it's not just the size you need to take into account. It's th

I absolutely agree with you. But as a startup moving at full speed and burning through investment, it's not just the size you need to take into account. It's the maturity of the tools, especially around unit testing (and automated testing), the stability of the IDE, and a whole host of issues where you don't have the luxury of wrestling with workarounds for an immature environment. You speak of program correctness but we have a whole suite of tests, analysis and coverage that would have to be migrated to work with Swift and obj-c and it's an investment we can't take lightly. Having said that, I think it is about time to move to Swift and it's going to be in the spotlight for us soon.