[math-fun] When marketroids do science...

http://www.minimed.com/patientfam/pf_ipt_paradigm_insulin_pump.shtml RF Technology Provides More Flexibility RF technology uses sound waves to "beam" information instead of light waves like infrared (IR) technology. To understand why RF is more adaptable, compare your TV remote control to a cell phone. Your remote control uses infrared (IR) technology, so you must point it directly at your TV to beam the light waves. Cell phones, however, use sound waves that travel more freely, even penetrating solid objects. As a result, you eliminate the inconvenience. -- Mike Stay staym@clear.net.nz http://www.cs.auckland.ac.nz/~msta039