us right that's a big question how do humans and animals run so quickly and what happens is there is that it's not supervised running it's not refunds my drowning it's something else and so when you look at babies you talk to a cognitive scientist development to a cognitive scientist and and you ask them you know when do baby learn basic things like gravity you know when do they learn that objects are supposed to fall I'll tell you around nine months so before nine month old you should be the scenario here but there's a little car