Assumption mapping, stakeholder grids, futures matrices, and risk registers are the same physical act: put items on two axes and read meaning off where they land. Write the list as text, drag to place, and the zones tell you what to do next.
Start typing — or load an example.
These methods share a mechanism: position on two axes, meaning from the zone you land in. The zone — not the quadrant — is the unit that matters, so this tool speaks zones: presets, N×M grids, and inequality rules for corners and diagonal bands. Positions are honest ("roughly here"), the readout is opinionated.
Assumption mapping (importance × evidence) ranks what to test next: high-importance, low-evidence assumptions go to test first, and the tool nags until each has a designed test. Cheap test methods: interview five people who felt the problem this week; prototype a fake door or concierge version; data pull — find behaviour you already log. Sources: Teresa Torres, Continuous Discovery Habits; David J. Bland, Testing Business Ideas.
Stakeholder grids (power × interest) date to Mendelow (1991): manage closely, keep satisfied, keep informed, monitor. The tool flags high-power stakeholders you haven't read an attitude on — those are the ones who surprise you.
Futures matrices cross your two most critical uncertainties and name the four worlds (Schwartz, The Art of the Long View; the GBN two-axes method). Rename the scenarios right on the map; drag signals into worlds as they arrive.
Risk grids (probability × impact) get diagonal severity bands rather than a rigid matrix — and a health warning: risk matrices compress ruthlessly (Cox 2008), so treat the register as an agenda, not an answer.