Gaps and blind spots.
IN A PLAN
"Here is my plan. What is missing? What questions should I be asking that I have not?"
IN A DOCUMENT
"What would a careful reader ask that this does not answer?"
IN A PROCESS
"What could go wrong in this process that is not accounted for?"
IN YOUR OWN WRITING
"Read this as a sceptical reader. What is unclear, unsupported or contradictory?"
IN A CONTRACT
"What is not addressed in this agreement that should be?"
IN YOUR BUSINESS
"Here is how my business operates: [describe]. What would stop it operating for a week? What would reduce that risk?"
Most small businesses have never asked that, and the answers are sobering.
WHAT TO DO WITH THE ANSWERS
Most will be things you considered and rejected.
One or two may be genuine omissions. That is the value.