[T-Kuhn]’s Octo-Bouncer platform has learned some new tricks since we saw it last ... Every now and again, [T-Kuhn] says that the ball will bounce in an unexpected direction.

On a sunny July day in 2005, a frog jumped out of a rain gutter to see an unexpected sight: an avalanche of thousands of colorful bouncy balls careening down a San Francisco street. Although San ...