"This lock-and-key variety of crude aboutness," Dennett says, "is the basic design element out of which nature has fashioned the fancier sorts of subsystems..." Design element? Fashioned? Do tell, Professor. It all sounds very purposeful to me.
Afterthought: The difficulty people have in discussing evolution without employing terms that imply intentionality strongly suggests that a sense of intentionality may be -- to use a favorite term of theirs -- hard-wired in us.