Mapping and Testing Venture Assumptions
A method for surfacing the assumptions your venture depends on and prioritizing them by how risky and important they are — so you test what matters first.
Every venture is a stack of assumptions: that the problem is real, that customers will pay, that you can deliver, that the economics work. Mapping those assumptions makes the hidden bets visible. Ranking them by risk tells you what to test first — because the assumption most likely to be wrong and most fatal if it is deserves your attention before anything else.
- You have a thesis and customer evidence but many untested beliefs
- You need to decide what to validate next
- The team disagrees about what the real risks are
Surface every assumption
List what must be true for the venture to work — about the customer, the solution, the market, and the economics.
- Desirability: do customers want it?
- Feasibility: can you build it?
- Viability: do the economics work?
Rank by risk and importance
Plot assumptions by how uncertain they are and how damaging it would be if they were false.
- High uncertainty + high impact = test first
- Known truths need no experiment
- Focus effort on the fatal unknowns
Turn risky assumptions into experiments
Each leap-of-faith assumption should map to the cheapest experiment that could break it.
- Define what evidence would confirm or refute it
- Choose the lightest test that gives a clear signal
- Set a pass/fail threshold in advance
Update beliefs as evidence arrives
As experiments resolve, move assumptions from 'untested' to 'validated' or 'broken' — and re-rank what remains.
- Record the result and its implication
- Revise the thesis when a core belief breaks
- Re-prioritize the remaining unknowns
- Testing easy assumptions because they are comfortable
- Confusing opinions with validated assumptions
- Never setting a threshold, so results are argued endlessly
How Cogliva helps
Venture Lab helps you map assumptions across desirability, feasibility, and viability, rank them by risk, and link each risky one to a validation experiment.
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Frequently asked questions
What is a leap-of-faith assumption?
The belief the whole venture depends on and that you have the least evidence for. Test it first.
How many assumptions should I map?
As many as you can surface, but only a few will be both risky and important. Those are the ones to act on.
What if an assumption breaks?
That is a successful experiment. Update your thesis and decide whether to pivot or stop.
Test what could break the venture
Map your assumptions, rank them by risk, and validate the ones that matter most.