In business, claims are cheap. Evidence is what separates reality from bullshit.
Business is full of impressive claims. Companies promise extraordinary results, consultants advertise transformative solutions, and executives present ambitious strategies supported by elaborate presentations.
But a persuasive argument is not necessarily a true one.
The fact that someone can explain why something should work does not establish that it actually works.
The essential question is simple: Where’s the proof?
The Difference Between Claims and Evidence
In Hard Facts, Dangerous Half-Truths, and Total Nonsense (2006), Jeffrey Pfeffer and Robert Sutton examine how organizations repeatedly adopt management practices based on fashion, authority, anecdote, and untested assumptions.
They argue for evidence-based management: making decisions based on the best available evidence rather than persuasive stories or conventional wisdom.
Denise Rousseau makes the distinction explicit in Is There Such a Thing as Evidence-Based Management? (2006):
“Evidence-based management means translating principles based on best evidence into organizational practices.”
The important distinction is between what someone claims, what the evidence demonstrates, and what remains uncertain.
An impressive track record does not necessarily establish causation. A customer testimonial does not demonstrate typical results. A growing revenue figure does not establish profitability. And an elaborate financial forecast is not proof that its assumptions will materialize.
Why This Matters
The problem is not simply that people lie.
People can sincerely believe claims that have never been adequately tested. Incentives, selective attention, and confirmation bias can reinforce conclusions that favor their interests.
In a 2006 Stanford interview, Robert Sutton observed that people tend to apply:
“a much higher bar for evidence for things they don’t believe”
This creates a dangerous asymmetry: we readily accept evidence supporting our preferred conclusions while demanding rigorous proof from competing claims.
The standard of evidence should not depend on whether we want the claim to be true.
The Practical Principle
Whenever someone makes an important claim, ask:
- What exactly is being claimed? Replace vague promises with specific, testable statements.
- What evidence supports it? Request actual results, credible data, or independently verifiable observations.
- Does the evidence prove what is claimed? Distinguish correlation from causation and activity from outcomes.
- What is the comparison? Examine results against relevant alternatives, baselines, or controlled tests.
- What would demonstrate that the claim is wrong? Identify the evidence that could challenge the conclusion.
Eric Ries, in his work on validated learning, emphasizes that useful business metrics must be:
“actionable, accessible, and auditable.”
The objective is not absolute certainty. Most important business decisions must be made with incomplete information.
But uncertainty is not a license to substitute rhetoric for evidence.
A new idea may deserve experimentation before proof exists. An established claim presented as fact deserves a substantially higher standard.
The burden of evidence belongs to the person making the claim.
And when the evidence is missing, the proper conclusion is not necessarily that the claim is false.
It is that the claim has not yet earned our confidence.
References
- Pfeffer, J., & Sutton, R. I. (2006). Hard Facts, Dangerous Half-Truths, and Total Nonsense: Profiting from Evidence-Based Management. Harvard Business School Press.
- Rousseau, D. M. (2006). Is There Such a Thing as Evidence-Based Management?. Academy of Management Review, 31(2), 256–269.
- Pfeffer, J., & Sutton, R. I. (2006). Prove It. Stanford Magazine, May/June.
- Ries, E. (2010). The Science of Lean Startups. Business of Software Conference.