Apr 6 2012: Swallowable perfume makes perfect sense. Spray on perfume you always end up with too little or too much, whereas one that you sweat out will be self replenishing and will always be just the right amount of smell (assuming it's properly engineered). It would be like a breath mint for the skin.
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A reply on Talk: Scott Fraser: Why eyewitnesses get it wrong
A reply on Talk: Lucy McRae: How can technology transform the human body?