this pop up around eight months so if you show a six-month-old baby the scenario on the top left where you put a little car on a on a platform and you push up you push the car off the platform and it doesn't fall it's hidden in the back put the baby you can see that it's a trick six months they they're not surprised to just you know that's how the world works it was one more thing I need to learn after nine months they've learned that objects are not supposed to float in the air that you're supposed to fall and they go like