As I’m re-watching the Doctor Who 2010 Christmas special1 I suddenly caught myself thinking… Wait a second, he just broke his sonic screwdriver. Again.
The last sonic screwdriver was good for two doctors and four seasons. This last screwdriver lasted only a single season. 2 There was a reference to his screwdriver trying to regenerate itself, but who knows.
The cynic in my wonders if it was all a ploy to sell yet another sonic screwdriver.