For a while now Jadzia has been climbing one step, then getting stuck and screaming for help, but recently (some time after the Burlington Mall Santa but before the Mapleview Mall Santa), she climbed the entire flight herself. Going down stairs she is not nearly so graceful and has already fallen down twice. Once I was sitting right next to her and couldn't catch her in time. The other time I thought the door to downstairs was closed when in fact William had opened it and encouraged her to "Come down Jadzia". So far, no visible bruising.
A less dangerous skill she's also developed is clapping hands, so I now get lots of applause.