According to an Associated Press article in today’s Kansas City Star, a tiny spy plane has been designed that manuevers like a hummingbird. It has a six-and-a-half inch wing span, and can fly in all directions. Its spying can serve in many ways, one of the best ones being to locate people trapped in collapsed buildings and transmit the best path for rescue. Similar devices are being modeled on other Mother Nature creatures –the maple leaf seed, for example, which spins down by the hundreds in its season. How small a spy will we be able to design? Lady bugs? Ants? Raindrops? I wonder if some of the world around us is spying for somebody else.
The idea of smallness brings to mind a Medieval question: how many angels can dance on the head of pin?The answer would depend on how large the pin is, how small angels can become, if angels can dance, and a thousand other things.