1) I think Github are a long way past prototyping... they just sold their rough sketch for $7.5b
2) A year and a half of how much effort?
2) A year and a half of how much effort?
> The project originally began with 1 full-time engineer and a small army of volunteers. We grew that team to 4 full-time engineers plus the volunteers.
They had four full-time people working on upgrading Rails at some point!