toygeek writes: How much robot can you get for a hundred bucks? Not much: $100 is about a quarter of a Roomba. A quarter of a cheap Roomba. Or, you can spend it on an open source education robot from Switzerland that will help your kids to learn how to do things besides not vacuuming the floor.
Thus mathematics may be defined as the subject in which we never know
what we are talking about, nor whether what we are saying is true.
-- Bertrand Russell