No matter how slick the demo is in rehearsal, when you do it in front of a live audience, the probability of a flawless presentation is inversely proportional to the number of people watching, raised to the power of the amount of money involved.
I would rather play Hamlet with no rehearsal than TV golf.Jack (John Uhler) Lemmon
Life ain't a rehearsal, the camera's always rollin'.drake
Home is a place not only of strong affections, but of entire unreserve; it is life's undress rehearsal, its backroom, its dressing room, from which we go forth to more careful and guarded intercourse, leaving behind us much debris of cast-off and everyday clothing.harriet beecher stowe
?Rationality is what we do to organize the world, to make it possible to predict. Art is the rehearsal for the inapplicability and failure of that process.brian eno
All ritual has a notable tendency to reduce itself to a rehearsal of formulas.thorstein veblen