I mean, if you are directing actors to do one thing and then directing them to do something else entirely because the one thing you wanted them to do may not work, then you are just shattering their confidence in the project.
In the field of sports you are more or less accepted for what you do rather than what you are.
The fact to which we have got to cling, as to a lifebelt, is that it is possible to be a normal decent person and yet be fully alive.