Everyone has a plan until they get punched in the face.
A criminal trial, like life itself, is an improvisation.
When a trial begins, you are live on the air. You are responding in real time to a dynamic situation where there may be no clear course of action. Your pre-trial plan may have to be set aside when unforeseen issues arise.
Litigation demands a high degree of comfort with uncertainty and an ability to adapt quickly to changing circumstances.
It also requires an acceptance that the best course of action may only reveal itself with the benefit of hindsight.