As an infant, she didn't know that that uncomfortable restless achy feeling is tiredness and the cure is to relax and close her eyes, she didn't know that that pain in her eyes is the sun and the cure is close them or turn her head away. She knew was if something was in her mouth, she should suck on it. That was the sum total of her understanding of the world.
She still has odd weaknesses in the growing storehouse of stuff she knows and can do. She has no depth perception, none, and can't tell if those birds she loves so much are right in front of her or a hundred feet away. She'll strain to grab them either way. She thinks helicopters are birds. She'll try and grab those too. She'll try to open doors she's nowhere near and step on things she can't reach. I feel guilty laughing as I watch her stretch and strain to reach what she wants, with no real concern for her center of balance or even the location of her limbs. Such great, but often futile, effort.