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>I believe the issue is the spark that gets created when you flip the switch. That's "making fire," which is one of the kinds of work that's prohibited.

Interesting. A spark is a plasma. According to this, http://www-spof.gsfc.nasa.gov/Education/FAQs7.html#q97 fire is not a plasma. So creating a spark isn't the same thing as making a fire. Obviously I'm not trying to change anyone's religious beliefs here, I just thought it was interesting (I had never really thought about what a spark "is" and whether fire would be considered the same thing). It's fun lurking sometimes...