I'm rebuilding this site right now. So a lot of things may look broken. But what better motivation for me to finish it?

Management is highly interruptive, and great engineering — where you’re learning things — requires blocking out interruptions. You can’t do these two opposite things at once.  As a manager, it is your job to be available for your team, to be interrupted. It is your job to choose to hand off the challenging assignments, so that your engineers can get better at engineering.