by Bill Isaacs
A few moments ago, I watched as several stuffed animals walked themselves up the stairs in our home. We have two little boys who were endeavoring to see what would happen if they put their stuffed animals on the stairs with some Cheerios for fuel, stepped away, and then came back a few minutes later. Would the animals actually move up? Amazingly enough, it turns out they do! This became a subject of great fascination and delight and will no doubt be something we discuss for many days to come. How did they move?
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