Most decisions fail not because the upside was misjudged but because the downside was never examined.
Most decisions fail not because the upside was misjudged but because the downside was never examined. I find what everyone else missed. I pressure-test every assumption until only the structurally sound remain. I am not a pessimist. I am a stress-tester.
Hidden assumptions kill more plans than bad execution
Second-Order Effects
What happens after the first effect? And after that?
Interview The Validator
Bring your most confident decision. Soren will extract the assumptions, run the pre-mortem, and tell you where the plan is weakest.
My leadership team is excited about a new market expansion. I need someone to tell me what we're missing. Run a pre-mortem.We're about to sign a $2M contract with a single vendor. What are the hidden assumptions we haven't tested?Everyone in my industry is moving to AI automation. Am I falling behind or is this survivorship bias?I have a business plan I'm confident in. What's the base rate for this type of initiative and why should I expect to beat it?
Bring your most confident decision. Soren will extract the assumptions, run the pre-mortem, and tell you where the plan is weakest.
This thinks like Soren Blackwell — Bring your most confident decision. Soren will extract the assumptions, run the pre-mortem, and tell you where the plan is weakest. Ask it anything.
When everyone agrees quickly, something has been overlooked. Unanimous enthusiasm without adversarial testing is the most dangerous consensus in a boardroom. Here's how to pressure-test it.
The historical success rate for this type of initiative is 15%. Your team believes you'll beat it because of factors X, Y, and Z. So did every other team that failed. I'm not saying you're wrong — I'm saying you need to prove your deviation from the base rate before you fund it.
It's 18 months from now and this initiative has failed catastrophically. What happened? That question — asked sincerely, before any resources are committed — surfaces risks that no amount of forward-looking optimism will reveal. Here's the exact pre-mortem protocol I run and why the second-order effects are where the real damage hides.
9 minApr 1, 2026
Soren Blackwell — Questions & Answers
Questions people actually ask — answered without hedges.
Who is Soren Blackwell?
Soren Blackwell is an ExecutWin — a synthesized digital intelligence twin built on the StackFast PERSPECTIVE framework. Soren's expertise is synthesized from the world's best public-domain risk analysis: Kahneman's cognitive biases, Taleb's antifragility, pre-mortem methodology, base rate reasoning, and structural failure analysis. Soren is transparently labeled as an ExecutWin, not a human risk consultant.
What can I use The Validator for?
Any decision where the downside hasn't been examined: pre-mortem analysis on major initiatives, assumption extraction from business plans, base rate reality checks, second-order effect mapping, survivorship bias detection, and confidence calibration. Soren is the voice that says what the room is afraid to say.
Why would I want someone to challenge my decisions?
Because the alternative is finding out you were wrong after the money is spent. Every Fortune 500 board has a designated skeptic. Most small businesses and startups don't — and their failure rate reflects it. Soren gives you the adversarial testing that prevents expensive mistakes.
What is the ExecutWin Boardroom?
Five digital intelligence twins — The Negotiator, The Operator, The Investor, The Validator, and The Builder — who deliberate on your hardest decisions using a governed, multi-round process. Soren's role in every deliberation is running the pre-mortem and challenging assumptions: before the board votes, the Validator extracts the hidden assumptions the plan depends on, identifies which ones are load-bearing, and stress-tests them against base rates and second-order consequences. Written opinions, adversarial research, independent reasoning, CEO-approved resolutions. Not a chatbot. A decision process.
The Blackwell Method
Extract
Surface Hidden Assumptions
Every plan has assumptions — stated and unstated. Number them. Assign confidence levels. Be honest about what is data-backed versus intuition.
Test
Identify Kill Assumptions
Which assumptions, if false, invalidate the entire plan? These are the load-bearing walls. Test them hardest. Ignore the cosmetic ones.
Stress
Run the Pre-Mortem
It's 12 months from now and this initiative has failed. List the three most likely causes. This surfaces risks that forward-looking optimism conceals.
Calibrate
Assign Confidence + Validate
70% confident based on X, Y, Z is actionable. 'We believe' is not. Precision about uncertainty is more honest than false certainty. Then issue your verdict.
The Assumptions Hold. The Validator Rests.
This is what happens when every major decision has been pressure-tested before execution and the failure modes are known before they arrive.