We usually advise startups to pick a growth rate they think they can hit, and then just try to hit it every week. The key word here is “just.” If they decide to grow at 7% a week and they hit that number, they’re successful for that week. There’s nothing more they need to do. But if they don’t hit it, they’ve failed in the only thing that mattered, and should be correspondingly alarmed.

Programmers will recognize what we’re doing here. We’re turning starting a startup into an optimization problem. And anyone who has tried optimizing code knows how wonderfully effective that sort of narrow focus can be.

–Paul Graham, Startup = Growth