<blockquote>Here's a more nuanced view: speed matters, and you can be really successful developing important, business-critical software by emphasizing speed over quality. If it's a problem domain you're particularly familiar with, especially if you have a lot of tools, frameworks, and libraries to help you, you can get an impressive amount of work done.

As you continue to work, you'll slow down. At some point—about six weeks is my guess—you'll actually be going slower than someone who's focused on quality. They'll speed up over time (asymptotically), and you'll continue to slow down (also asymptotically). You'll still be ahead of them, though, because you got so much done in that initial burst of energy. Your life will start to suck, though, and you'll be looking forward to when the project is done.

Eventually—about three to six months, I'd guess—you'll fall behind. You'll be going so slow that your initial advantage will have been erased. Luckily, you now get to hand the project off and start a new one. Win!

Three to seven years later, your code will be thrown away. It will be so expensive to change that it no longer makes economic sense to maintain. If it's still relevant, it will be rewritten at great expense and even greater opportunity cost.</blockquote>

Well said.