What my 3 yr old learned yesterday.

It is not nearly as much fun to slide down the stairs in a laundry basket as you think it will be. 

Yes it is possible to stay in the basket during a complete summersault. 

Even if you sit on a pillow in the basket.  Your head will still make contact with the floor. 

Yes he did this all on his own. The other boys were nowhere near.  I couldn't even blame them for instigating the experiment.