Mind in Motion

But their brains also prune synapses.

Space places two fundamental constraints on movement, constraints that are reflected in thought: proximity—near places are easier to get to than far ones; and gravity—going up is more effortful than going down.

Second Law of Cognition: Action molds perception.

neurons

First Law of Cognition: No benefits without costs.

perception.

recent estimate is eighty-six billion.

What fruit and vehicles and tools share are not specific shape or action but something more general, function or use.

to superordinate categories, we see that different kinds of fruit, furniture, tools, and clothing do not share shapes.