Aidan's still not making much sense when he talks, and his vocabulary doesn't seem to be growing very fast. Nevertheless, it's clear that he understands a lot more than he can communicate.
"Close the door, Aidan," we'll say, and he'll go and close it.
"Go and get a can of corn," we'll tell him, and he'll go and get it.
"Point to the cow," we'll say while reading one of his books, and nine times out of ten, he'll point to it.
It's really pretty amazing.
