> Nearly three dozen designers and engineers have spent the past several months tearing out the skeleton of Pinterest’s iOS app and rebuilding it. They’ve rethought its design, down to the font. Silbermann helmed the process, bringing his kids by the office on the weekends while he checked in on the team as they raced to transform Pinterest into a sleeker, faster service. He passed up the McDonald’s hash browns that the engineers ordered, instead pitching in by testing out the new build, surfing the app on an antiquated iPad 3 and iPhone 4 to make sure it worked great even on slower devices.

Those are hardly antiquated and this management style should be considered an example to avoid rather than a foolish attempt to impress people with how "hard" the work was, honestly.

This sort of thing is for handling outages and true emergencies, not meeting arbitrary deadlines.