and months of life and Emanuel depuis who is a colleague of Jean and me Vaness and on Facebook put together this chart that shows at what age babies learn different concepts so things like being able to make the difference between animate and inanimate object that pops up around three months and the notion of object permanence the fact that an object that is hidden behind another one is still there still exists the notions of solidity rigidity stability and then intuitive physics like gravity inertia are things like