A backronym developed for Lean startups, which can be easily adapted and used by any group developing an idea e.g. in a brainstorming session.
B is for the “Business opportunity”. (This can be swapped for “Basic premise” (e.g. for NPOs) or “Business requirement” in an Agile environment)
R is for any “Risks” that are to be managed or mitigated. (Planned for, insured against, avoided etc.)
A is for any “Assumptions” that are to be tested.
I is for any “Impediments” that need to be removed (or predicted ones that can be avoided).
N is for “Nudges” that can influence behaviour. (See "Nudge theory" for more detail).
S is for “Science” that can be used to backup our hypothesis. (This can easily be swapped out e.g. “Societal benefit” for NPOs)
T is for “Technology” required to implement change. (A non-technical project might use “Training”).
E is for “Engineering” to build the MVP/MMF/prototype. (Could be swapped e.g. for “Estimates”. Note: by all means estimate any costs incurred or resource types required, but not the time taken as cadence should be used instead).
A is for “Automation” required to make our tests repeatable and consistent. (Could be swapped out on non-tech projects e.g. “Applied mathematics”)
M is for “Metrics” used to measure success.
Note: the backronym BRAINSTEAM is completely “open source” and can be adapted as required.
 Ries, Eric (2011). "The Lean Startup : how today's entrepreneurs use continuous innovation to create radically successful businesses" (First edition ed.). New York. ISBN 9780670921607. OCLC 693809631.
 Barrow, Robert (2018-02-23). "BRAINSTEAM" on LinkedIn.