The mystery of learning...

From The Master Algorithm by Pedro Domingos:

If you’re a parent, the entire mystery of learning unfolds before your eyes in the first three years of your child’s life. A newborn baby can’t talk, walk, recognize objects, or even understand that an object continues to exist when the baby isn’t looking at it. But month after month, in steps large and small, by trial and error, great conceptual leaps, the child figures out how the world works, how people behave, how to communicate. By a child’s third birthday all this learning has coalesced into a stable self, a stream of consciousness that will continue throughout life. Older children and adults can time-travel–aka remember things past, but only so far back. If we could revisit ourselves as infants and toddlers and see the world again through those newborn eyes, much of what puzzles us about learning–even about existence itself–would suddenly seem obvious. But as it is, the greatest mystery in the universe is not how it begins or ends, or what infinitesimal threads it’s woven from. It’s what goes on in the small child’s mind–how a pound of gray jelly can grow into the seat of consciousness.