"you just can't save time by deliberately making tools that aren't 100% correct as much as everyone wishes they could." The point was about application develop

"you just can't save time by deliberately making tools that aren't 100% correct as much as everyone wishes they could." The point was about application development - you can save time by making applications that aren't 100% correct. In most software, any bug is OK as long as it happens a small enough percentage of the time.