What problem does it solve? Market sizing numbers often collapse under executive scrutiny because they rely on a single method, unsourced inputs, or invented precision. This Skill produces a defensible TAM, SAM, and SOM by running two independent models, reconciling them publicly, and reporting an honest confidence band with every assumption named and sourced. ## Core Features & Use Cases - Dual-model sizing: Builds a top-down pass from published totals and a bottom-up pass from named variables (universe, rate, frequency, price), then reconciles the two with a printed ratio instead of averaging them. - Sourced variable register: Every input carries a name, unit, range, source URL with date, and an evidence label (Fact, Inference, or Assumption), so any number can be challenged and re-run alone. - Value pool mode: When the thing being sized is not sold separately (an internal journey or feature), it sizes the money currently spent on the problem instead of fabricating a revenue TAM. - Use Case: A product manager asked "how big is the opportunity?" before a board review gets a graded market sizing with a band, a named swing variable, and a list of assumptions to validate next. ## Quick Start Ask the assistant to size the market for your product in a specific geography and buyer segment using the tam-sam-som-calculator skill.
