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.
As far as the laws of mathematics refer to reality, they are not
certain, and as far as they are certain, they do not refer to reality.
-- Albert Einstein