Too smart for his own good?

Like the velociraptor in Jurassic Park, Daniel surprised us by showing off how he's learned how to open the lever doors in the house. He's especially interested in one door in particular...the one that leads to the basement.  The few times that he got it open (pre-safety lock in the picture) I'd hear it open, followed by a "oooh" as he looked down the stairs to the basement and a slap slap of his arms as he crawled towards the edge (and mommy or daddy quickly swooped in to stop him).  Let's just say he was NOT pleased when the lock was put in place.  Here's a shot of him trying to rip off the safety latch. No luck, but now he's moved on to learning how to flush the toilet....greeeeaaat.