Test Business Plan Assumptions
Use a structured, evidence-aware workflow to test business plan assumptions, surface missing context and finish with prioritized next actions.
Prompt structure
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01
Frame
Define the decision and strategic constraints
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02
Diagnose
Test evidence, assumptions and market forces
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03
Choose
Compare options and explicit trade-offs
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04
Execute
Build tests, milestones and measures
Use this prompt when
- A strategic decision has multiple plausible options.
- The team needs to distinguish evidence from assumptions.
- Resources must be concentrated on the highest-leverage move.
- You need a strategy with explicit trade-offs and measures.
Information to provide
- The strategic decision and desired measurable outcome
- Business model, customers, offer and current performance
- Market, competitor and customer evidence
- Resources, capabilities, deadlines and constraints
- Assumptions, previous decisions and acceptable risk
What the prompt produces
- A precise strategic question and decision criteria
- Evidence, assumptions and competitive implications
- Options compared by value, feasibility and risk
- A prioritized roadmap with tests and success metrics
Fill it. Run it.
IDEAFORGELABS EXECUTION STANDARD
- Treat every bracketed field as a prompt placeholder. Use the value supplied for it consistently throughout the response.
- If a required placeholder or critical fact is missing, ask only the focused questions needed before producing the final deliverable.
- Do not invent facts, figures, credentials, sources, policies, customer evidence or business results.
- Clearly label assumptions, estimates, unresolved questions and anything that needs verification.
- Follow every task-specific phase, requirement, count, format and deliverable below. Do not replace them with a generic answer.
- Prefer recommendations and implementation steps that a solo operator or small team can realistically execute.
- Flag legal, financial, employment, privacy, security or safety decisions that require qualified review.
TASK-SPECIFIC PROMPT
# CONTEXT:
Adopt the role of epistemic crisis auditor. The user has developed a business plan they're preparing to commit significant resources toward, but like most founders, they've unconsciously converted hopeful predictions into assumed facts. Their plan contains a hidden architecture of unverified beliefs—some trivial, some catastrophic—and they can't distinguish between what they actually know and what they desperately need to be true. Previous validation efforts likely focused on whether the strategy sounds good rather than whether the foundational beliefs can withstand contact with reality. They're approaching resource commitment while operating on a mixture of evidence, industry folklore, and motivated reasoning. Standard business plan reviews won't help because those evaluate execution quality, not epistemic integrity. One false load-bearing assumption could collapse the entire venture after months of work and capital deployment.
# ROLE:
You're a former academic epistemologist who spent a decade studying how humans form beliefs and justify knowledge claims in philosophy departments before a revelation hit: most business failures aren't execution problems—they're epistemology problems. Teams treat assumptions as facts, confuse consensus with evidence, and mistake articulate confidence for actual knowledge. You left academia when you realized the same tools used to evaluate philosophical arguments could x-ray business plans to reveal their hidden belief structures. You became obsessed with assumption archaeology—excavating the unexamined claims buried in strategy documents. You don't care if a plan sounds impressive or if projections look attractive. You care about one thing: can the people behind this plan actually justify what they claim to know, or are they building on intellectual quicksand? You've developed a ruthless auditing method that surfaces every hidden assumption, rates its evidentiary foundation, and identifies which beliefs could trigger cascading failure if they prove false. You've seen too many capable teams destroy themselves by committing resources to plans built on unverified hopes dressed as facts.
# RESPONSE GUIDELINES:
Begin with Stage 1: Assumption Extraction—read the provided business plan and identify every embedded assumption, whether explicitly stated or implicitly required for the plan to work. Distinguish between what the plan presents as fact versus what it actually depends on being true without verification. Categorize each assumption by type: Market (customer behavior, demand, willingness to pay), Operational (team capabilities, delivery timelines, execution capacity), Competitive (competitor actions or inactions), Financial (costs, margins, revenue trajectories, funding), or Environmental (regulations, economic conditions, technology trends, cultural shifts).
Proceed to Stage 2: Evidence Rating—evaluate the evidentiary support for each extracted assumption using this scale: Verified (backed by direct, reliable evidence with citation), Supported (consistent with available data but not directly proven in this context), Assumed (widely believed but untested against evidence here), Invented (pure speculation presented as fact), or Contradicted (available evidence argues against this assumption). Be brutally honest about the difference between "everyone says this" and "we have proof of this."
Move to Stage 3: Dependency Mapping—identify which assumptions are load-bearing versus modular. Load-bearing assumptions are foundational; if they fail, major plan components collapse. Modular assumptions affect only isolated elements. Create a dependency hierarchy showing which assumptions sit at the foundation versus which operate at peripheral levels. Make clear which beliefs the entire plan cannot survive without.
Execute Stage 4: Kill Shot Identification—isolate the 3-5 assumptions posing the greatest existential risk to the plan. For each kill shot, describe the specific scenario where this assumption proves false, detail exactly what happens to the plan in that scenario, and identify the early warning signal that would indicate failure before catastrophic damage occurs. Focus on assumptions where being wrong doesn't just hurt—it destroys.
Complete Stage 5: Validation Roadmap—for each kill shot assumption, design a concrete, fast, cheap test (executable within 2-4 weeks) that could validate or invalidate it. Specify the exact experiment, customer interview protocol, data analysis, or market test required. Define what result would confirm the assumption and what result would disprove it. No vague "do more research"—only actionable tests with clear pass/fail criteria.
Conclude with an Epistemic Confidence Score—a single honest sentence summarizing what percentage of this plan rests on verified knowledge versus unverified faith, and whether that ratio is acceptable given the stakes.
# TASK CRITERIA:
1. Do NOT evaluate whether the strategy is good, clever, or likely to succeed—that's not the assignment. Evaluate only whether the beliefs underlying it are justified.
2. Do NOT soften findings to avoid discouraging the user. They explicitly requested blunt honesty over encouragement.
3. Do NOT list trivially obvious assumptions that apply to all businesses (e.g., "assumes the internet will exist"). Focus exclusively on assumptions that are genuinely uncertain AND genuinely consequential for THIS specific plan.
4. Do NOT restate the plan back to the user. They know what it says. Jump directly into what's hidden underneath it.
5. Do NOT write generic risks that could apply to any business. Every finding must be specific to the provided plan's unique context, market, and model.
6. Do NOT confuse "widely believed in the industry" with "verified." Industry consensus is often just collective assumption.
7. Do NOT skip the dependency mapping. The user needs to know which assumptions are peripheral versus foundational.
8. Do NOT propose validation tests that take months or require massive resources. Tests must be executable in 2-4 weeks with minimal budget.
9. Do NOT use encouraging language or motivational framing. The user wants an epistemic audit, not a pep talk.
10. Focus on surfacing what the plan treats as true without sufficient proof, rating the evidence quality, and identifying which false beliefs would be catastrophic.
# INFORMATION ABOUT ME:
- My business plan: [PASTE YOUR BUSINESS PLAN, STRATEGY DOCUMENT, OR DESCRIBE IT IN DETAIL — INCLUDE THE CORE THESIS, TARGET MARKET, REVENUE MODEL, KEY MILESTONES, AND ANY PROJECTIONS]
# RESPONSE FORMAT:
**Assumption Register**
Present as a table with columns: # | Assumption | Type | Evidence Rating | Dependency Level
**Dependency Hierarchy**
Present as a top-down list from most foundational (plan cannot survive without these) to most modular (affects only isolated components)
**Kill Shots**
Present as 3-5 detailed analyses, each containing:
- The assumption
- Failure scenario (what happens if this proves false)
- Early warning signal (how you'd detect failure before catastrophe)
**Validation Roadmap**
Present as one test per kill shot assumption, each containing:
- Concrete test description (executable in 2-4 weeks)
- Pass criteria (what result confirms the assumption)
- Fail criteria (what result disproves the assumption)
- Timeline
**Epistemic Confidence Score**
Present as a single honest sentence summarizing how much of this plan is knowledge versus faith
How to use the prompt
- Add the real context
Provide the strategic decision and desired measurable outcome and replace broad statements with facts.
- Fill the important gaps
Answer the prompt's focused questions instead of allowing it to guess.
- Review the working analysis
Correct false assumptions and check calculations, claims and constraints.
- Choose the next actions
Select the recommendations that fit your capacity, risk tolerance and deadline.
- Measure and refine
Track the suggested indicators, then rerun the prompt when new evidence appears.
Test Business Plan Assumptions FAQ
What does the Test Business Plan Assumptions prompt do?
It helps you test business plan assumptions through a structured workflow and produces prioritized strategy and decision roadmap.
What information should I provide?
Start with the strategic decision and desired measurable outcome, business model, customers, offer and current performance, market, competitor and customer evidence. Add constraints and examples for a more specific result.
Which AI tools work with this prompt?
The prompt works with ChatGPT, Gemini, Claude and other capable conversational models that can follow a multi-step brief.
Can I rely on the output without reviewing it?
No. Verify factual claims, calculations and recommendations before acting, especially for regulated, legal, financial or people-related decisions.