> If we really cared about “uptime” of employees, we’d all be living in bicycle range of our jobs

And then reality hits. You're married and your partner's job is on the other side of the city. You just bought and house and now you want to switch jobs but you'd be limited to only jobs in biking distance. eTc....

I bike to work (was 4 miles, now 2), but it's unrealistic to expect people to be in bicycle range of their jobs.