A founder's working model contains assumptions about customers, competition and how people get things done. Many were learned through costly experience. That makes them valuable and sometimes difficult to question.
As the company changes, the model needs a way to change with it.
Choose an assumption that affects a current decision
Write it as a claim that could be tested. Customers will not pay for implementation support is more useful than we know our market.
Look at recent evidence, including lost business and unusual requests. Ask whether the conditions resemble those in which the assumption was formed.
Invite someone with a different vantage point to examine the claim. A newer employee may notice an inconsistency that experienced colleagues have learned to work around.
Update the map explicitly
If the evidence changes the view, record what changes in the plan. Acknowledging an exception without changing any decision may leave the old model intact.
Where evidence is incomplete, run a proportionate test rather than arguing indefinitely from competing stories. Define the result that would justify further commitment.
Stress and time pressure may affect how patiently alternatives are considered. They do not make a preferred model the only one available. A review process can create space to examine an assumption even when the founder's first answer arrives quickly.
Keep the learning record. It will show which parts of experience continue to help and which need a different interpretation.
