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This is obvs not learning from scratch since he has been practicing manipulating objects for several hundreds of hours. however it *is* his first time manipulating something this small, which requires entirely different strategies. His previous objects had been more like ~5-15cm
Fascinating bit is that he tried a variety of approaches before converging towards a solution: try with one hand, try with the other hand, try to pick the object from the floor with his mouth directly (a completely different strategy!)
One attempt he brought his hand to his mouth thinking he had grabbed the cookie, though he had not. So he has a model of what was supposed to happen after attempting to grab the cookie. Then he saw the cookie was still there and tried again.
Interestingly the most difficult part wasn't grabbing the cookie (despite its never-seen-before size) but dropping it in his mouth (since he's grabbing with his palm, not his fingertips. Still managed to do it in a couple of attempts.
He locks on a goal and keep trying until he reaches the goal. Has a clear model of what success means, what the key steps towards success are (grabbing, bringing hand to mouth, dropping cookie), and is able to invent novel strategies for each step in a handful of attempts.
Curiosity driven learning with exploration <-> exploitation at play here. Not necessarily thru a reward signal. Wondering if this type of behavior is naturally emergent or interwoven in us since birth?
A baby's life only features extremely sparse negative/positive reinforcement signals (pain / hunger / food) and thus development is almost entirely intrinsically driven.
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