The great thing about theater is that you have so much time to prepare, and to fail, before presenting it to the public. In film, the high-wire act seems to be that much farther up, and the net seems to be less there.
With film, oftentimes you work in a vacuum and then you get on a high wire and then you try it and then the day's over and that piece of film exists somewhere in a vault for 1000,000 years and that's it.