DigitalDame2 writes "Steve Wozniak, co-inventor of the Apple personal computer (along with Steve Jobs), hosted the first annual Modern Marvels Invent Now Challenge. Wozniak's favorite invention is one that shows where to clip your dog's claws without injuring the dog. The Strawjet, a creation that weaves straw left over from a harvest into building materials, won the grand prize."
I've never been canoeing before, but I imagine there must be just a few
simple heuristics you have to remember...
Yes, don't fall out, and don't hit rocks.