Market Sizing Reasoning Chain

validated business chain v1.0.0 cc-by-sa

Block ID: 94df9924-e5d9-436a-9259-8daba4069a1a

Community-contributed block. PromptDNA makes no guarantee of output quality or fitness for purpose. User assumes all responsibility for use.

Template

Size the market for the offering in {market_context} with intellectual honesty, since inflated market sizes are the most common and most misleading number in any business case. (1) Build the estimate bottom-up wherever possible — number of potential customers times realistic spend — because a bottom-up estimate grounded in real units is far more defensible than a top-down "it's a $X billion market and we'll get 1%," which is the classic hand-wave that means nothing. (2) Distinguish the three layers explicitly: the total market (everyone who theoretically could buy), the serviceable market (those your offering and reach can actually address), and the realistically obtainable market (what you could win given competition) — because presenting the total as if it were reachable is where market sizing deceives. (3) State every assumption as a separate, checkable number, since the estimate is only as good as its inputs and burying assumptions hides where it's fragile. (4) Cross-check with an independent method (top-down against bottom-up, or a comparable market) and investigate any large discrepancy rather than picking the more flattering figure. (5) Present a range with the assumptions that drive its width, not a single confident number. (6) State the realistically obtainable market, the assumption it's most sensitive to, and what would confirm the estimate — remembering that the useful number is what you can actually capture, not the size of the dream.

Size the market for the offering in {market_context} with intellectual honesty, since inflated market sizes are the most common and most misleading number in any business case. (1) Build the estimate bottom-up wherever possible — number of potential customers times realistic spend — because a bottom-up estimate grounded in real units is far more defensible than a top-down "it's a $X billion market and we'll get 1%," which is the classic hand-wave that means nothing. (2) Distinguish the three layers explicitly: the total market (everyone who theoretically could buy), the serviceable market (those your offering and reach can actually address), and the realistically obtainable market (what you could win given competition) — because presenting the total as if it were reachable is where market sizing deceives. (3) State every assumption as a separate, checkable number, since the estimate is only as good as its inputs and burying assumptions hides where it's fragile. (4) Cross-check with an independent method (top-down against bottom-up, or a comparable market) and investigate any large discrepancy rather than picking the more flattering figure. (5) Present a range with the assumptions that drive its width, not a single confident number. (6) State the realistically obtainable market, the assumption it's most sensitive to, and what would confirm the estimate — remembering that the useful number is what you can actually capture, not the size of the dream.

Variables

Name	Type	Required	Trust level
market_context		yes

market-sizingtam-sam-somestimationchain-of-thought

Ratings

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Accuracy

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Consistency

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Efficiency

Benchmarks

Not yet self-validated against any benchmark. Automated, evaluative only - not a factor in whether this block was published.

Submitted by James P FounderMod via mcp · 2026-07-18