Why we should suspect that the brain has a limited ability to recurse, but prefers to daisy-chain instead:
The house the malt the rat the cat the dog the cow with the crumpled horn the maiden all forlorn the man all tattered and torn the priest all shaven and shorn the cock that crowed in the morn the farmer sowing his corn kept waked married kissed milked tossed worried killed ate lay in was built by Jack.