This was a great story, nicely told. Looking into it as an outsider, it seems that a key inflection point was their adoption of a really industrial-strength te

This was a great story, nicely told. Looking into it as an outsider, it seems that a key inflection point was their adoption of a really industrial-strength test discipline at just the right time. Not only was it impressive to have written the engine, but it seems to be doubly impressive to knuckle down for a year to get the test coverage - and it paid off in spades.