Post-Mortem: We Killed This Idea in One Board Session

Anonymous after-action: what looked buildable died under specialist collision — how the kill decision saved months, ego, and runway.

The corpse on the table (composite)

Concept: “Unified inbox intelligence” for SMB service firms — AI triage, routing, sentiment flags — ambitious integrations Week One fantasy.

Energy: founder conviction sky-high — micro-case studies, slick prototype.

Kill catalyst: not cruelty — collision.


What died first — distribution physics

Growth persona shredded CAC realism: outbound + SMB + noisy differentiation = long payback on thin margin once inference/support counted.

Not haters — math schedule.


Second wound — buyer specificity rot

“SMB service firms” hid incompatible workflows — agencies ≠ HVAC dispatch psychology.

PM optimism bundled personas — segment liquefaction.

Kill verdict subsection: pick one vertical bloodily or stop pretending software solves sociology.


Third wound — technical spine honesty

CTO lane surfaced integration reliability trap — promises became ops theater.

Maintenance avalanche probability > novelty retention.


Synthesis — verbal verdict flavor

Narrative collapsed toward:

Stop broad wedge — if revived: vertical choke + concierge proving ROI weeks — else abandon.

No participation trophy — gratitude privately after denial faded.


Emotional timeline (honest)

Hour zero: defensive adrenaline
Hour six: quiet recognition — spared churn hire
Week two: sharper narrow experiment spawned — healthy lineage

Killing an idea ≠ killing founder velocity — often unlocks honest next bet.


After-action artifacts worth stealing

Artifact Purpose
Written kill criteria pre-session Prevents moving goalposts
Segment razor — max three hypotheses Stops blob ICP
14-day falsifier experiment Cheap burial

Why one session sufficed

Parallel specialist pressure exposes compound failure faster than sequential doubt.

Same engine documented for stress-testingrun it before code becomes emotional concrete.


Related reading


Disclaimer

Composite educational scenario — not business counsel.


Kill early so your calendar dies of old age building the right thing — not the comfy thing.

Frequently asked questions

Are kills always permanent?
Often they kill *the posture* — broad wedge, wrong buyer — not the founder forever.
Why simulate killing?
Markets kill later with invoices — rehearsal chooses cheaper timing.
Is shame the goal?
No — clarity is. Kill criteria surface scope honesty.
Where do I stress-test ideas?
**[Stress-test hub](/en/stress-test-business-idea)** — methodology before tooling.