Seth Godin has a post on the collision of code and humans.

Thriving in a wet environment

If you've ever fixed any kind of machinery, you know that a device that's exposed to the elements is incredibly difficult to maintain. A washing machine or the underside of a car gets grungy, fast.

On the other hand, the dryest, cleanest environment of all is the digital one. Code stays code. If it works today, it's probably going to work tomorrow.

A Challenge for data centers comes to mind with his next paragraph.

Whatever we build gets misunderstood, corroded and chronic, and it happens quickly and in unpredictable ways. That's one reason why the web is so fascinating--it's a collision between the analytic world of code and wet world of people.