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.
The interval between a cold expectation and a warm desire may be filled by expectations of varying degrees of warmth or by desires of varying degrees of coldness.
Humor has become so cliche and boring that nothing's funny anymore unless it involves something totally disgusting that offends somebody or makes them feel really uncomfortable.

