At Vice, Leigh Alexander (recently at Boing Boing) writes about the superstitious rituals we all practice when it comes to technology. We do it whether we are conscious of the ritual or not, and we do it even when we are informed the ritual is harmful to the machines.
...blowing on cartridges may have actually caused more problems than it solved. But because collectively our anecdotal experiences had led us to believe that blowing had some positive effect—it seemed to work, even if it took an unpredictable number of puffs, amid all kinds of other unknown factors—we established a ritual. Our belief that blowing on cartridges does something is stronger even than evidence to the contrary.
Closing background apps on your iphone, wiggling accellerometers, tilting game controllers, double-tapping touchscreen icons, and rebooting slow computers: all modern equivalents to the ol' Nintendo Blow. But something has changed: now the designers of the technology can adapt to and integrate our rituals into how technology works. And once it's there, the technology can demand it. Read the rest