Ask a founder what worries them most about their launch, their round, or their new hire, and they will usually answer without hesitation. It is the thing they have been quietly turning over for weeks. It feels obvious, specific, and real.
It is also, more often than not, not the thing that actually sinks the plan.
The Worry You Walked In With Is a Decoy
This is one of the more uncomfortable, genuinely useful findings behind the pre-mortem approach: the nagging doubt a founder arrives with is almost never the failure mode that materialises. The real danger tends to sit one layer beneath it — an assumption so obvious it never even got said out loud, let alone tested against evidence.
That is a strange thing to sit with. You did not fail to worry. You worried about the wrong thing, with total confidence, because the actual danger was never framed as a worry at all. It was framed as a fact.
Why "Obvious" Is the Most Dangerous Word in Your Plan
Every plan runs on a handful of things founders treat as simply true: of course current customers represent the wider market, of course the agency will deliver on time, of course people will switch from the free tool they already use. These are not risks in a founder's mind. They are assumptions dressed up as facts, and facts do not get challenged.
That is precisely why they are so dangerous. A risk you have named, you can at least watch. An assumption you never named cannot be watched at all, because as far as your plan is concerned, it was never a question in the first place.
Learn more and read the full book Pre-Mortem for Founders.
