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Morgue files

The Kill
Sheet.

Startup validation, founder mistakes, and honest takes. No fluff. No cheerleading. Just what kills ideas and how to survive.

Case #030·Filed: June 22, 2026·5 min read

The One-Sentence Test: Does Your Startup Idea Pass?

If you cannot describe your startup idea in one sentence, you do not understand it well enough to build it. Here is what the sentence has to contain.

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Case #029·Filed: June 15, 2026·6 min read

How to Run a Startup Customer Interview That Actually Tells You Something

Most startup customer interviews produce one result: confirmation that the idea is good. That result is wrong more often than it is right — and the interview design is why.

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Case #028·Filed: June 8, 2026·6 min read

How to Price Your Startup Idea Before You Build

Founders who say they will figure out pricing later are deciding to build first and learn whether the economics work second. That is an expensive order of operations.

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Case #027·Filed: June 1, 2026·6 min read

How to Write a Value Proposition That Actually Makes Sense

Most founders can describe what their product does. Almost none can explain why a stranger should pick it over whatever they are doing right now.

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Case #026·Filed: May 25, 2026·6 min read

Why Surveys Don't Validate Startup Ideas

A survey that confirms your idea feels like evidence. It is not. Surveys measure what people say they will do. Validation measures what they actually do.

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Case #025·Filed: May 22, 2026·6 min read

The Problem With Building an MVP Too Early

An MVP tests your execution, not your premise. If the premise is wrong, the MVP just confirms it faster and more expensively.

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Case #024·Filed: May 20, 2026·6 min read

TestYourIdea vs IdeaRoast (2026)

TestYourIdea scans 20+ sources and gives you a viability score in under five minutes. IdeaRoast runs four adversarial agents against live market data. Same speed. Different mission.

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Case #023·Filed: May 17, 2026·6 min read

Founder-Market Fit: Are You the Right Person to Build This?

Investors examine founder-market fit. Most founders don't. Here's what it actually means — and how to know if you have it before you build.

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Case #022·Filed: May 13, 2026·6 min read

How to Know If Your Startup Timing Is Wrong

Timing failures feel like market failures or execution failures — which is why they go undiagnosed until it's too late.

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Case #021·Filed: May 10, 2026·6 min read

How to Evaluate Your Startup Competition Without Panicking

Finding competitors is not the problem. Knowing what to do with that information is.

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Case #020·Filed: May 7, 2026·6 min read

What High-Scoring Startup Ideas Have in Common

After thousands of idea autopsies, the patterns on the other end are just as clear. High-scoring ideas share six traits — none of them are about originality.

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Case #019·Filed: May 4, 2026·7 min read

B2B vs B2C Startup Validation: What Actually Changes

The validation playbook you read was written for one model. If you are building the other, most of it does not apply.

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Case #018·Filed: May 1, 2026·6 min read

How to Use Reddit to Validate a Startup Idea

Reddit will lie to you if you ask it the wrong question. Used correctly, it is one of the best sources of raw product signal available.

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Case #017·Filed: April 28, 2026·7 min read

How to Validate a SaaS Idea Before You Build

SaaS validation is different. Churn compounds, CAC scales differently, and "people want this" is not the same as "people will pay monthly for this forever."

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Case #016·Filed: April 26, 2026·6 min read

IdeaProof vs IdeaRoast (2026) — Honest Comparison

IdeaProof gives you a report that looks like validation. IdeaRoast gives you the part of validation that actually hurts.

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Case #015·Filed: April 24, 2026·6 min read

The 4 Questions Every Startup Idea Must Answer

Most founders ask "will this work?" The question is meaningless. These four questions are not.

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Case #014·Filed: April 22, 2026·6 min read

ValidatorAI vs IdeaRoast (2026) — Which Actually Validates Your Startup Idea?

ValidatorAI charges $25/month for real reports. IdeaRoast charges $5 per report with no subscription and live market data. One is a coach. One is a coroner.

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Case #013·Filed: April 20, 2026·6 min read

Is Your Startup Idea a Feature, Not a Product?

Notion added it. Stripe added it. Slack added it. Here is how to tell if your startup idea is a feature before a bigger product ships it for free.

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Case #012·Filed: April 18, 2026·8 min read

Best Startup Idea Validators 2026 — Ranked & Compared

IdeaRoast, IdeaProof, WorthBuild, ValidatorAI — the four tools worth considering this year, ranked by price, speed, honesty, and what you actually get.

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Case #011·Filed: April 17, 2026·6 min read

Market Sizing for Non-MBAs: A Practical Guide

TAM/SAM/SOM was designed for investor decks, not for deciding whether to build. Here is the method that actually tells you if your market is real.

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Case #010·Filed: April 15, 2026·6 min read

Is Your Startup Idea Too Niche? How to Tell Before You Build

Niche is not the enemy. Building for a market that cannot sustain a business is. Here is the unit economics test that tells you which one you have.

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Case #009·Filed: April 14, 2026·6 min read

Why ChatGPT Can't Validate Your Startup Idea

It will find reasons your idea could work. It will sound credible. It will leave you more confident than when you started. That is exactly the problem.

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Case #008·Filed: April 14, 2026·6 min read

The Startup Idea Validation Checklist

Eight questions every startup idea must answer before you build. Most founders skip at least three. The ones they skip are usually the ones that kill the idea nine months later.

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Case #007·Filed: April 13, 2026·6 min read

WorthBuild Review 2026 — vs IdeaRoast: Which Should You Use?

Honest review of WorthBuild from someone who built a competing product. What it gets right, where it falls short, and how to decide.

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Case #006·Filed: April 13, 2026·6 min read

When to Kill a Startup Idea

Most founders quit too early on good ideas and too late on dead ones. Here are the four signals that mean it is actually finished.

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Case #005·Filed: April 12, 2026·7 min read

My Startup Idea Already Exists. Now What?

You found a competitor. Here is what that actually means — and the one question you have to answer before you decide whether to keep going.

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Case #004·Filed: April 11, 2026·7 min read

How to Find Your Startup Idea's Fatal Flaw Before You Build

Every startup idea has at least one thing that will kill it. Most founders find it a year too late.

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Case #003·Filed: April 8, 2026·6 min read

Will People Pay for My Idea? How to Find Out Before You Build

Everyone says they love it. Nobody has opened their wallet yet. Here's how to close that gap.

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Case #002·Filed: April 6, 2026·7 min read

Why Most Startup Ideas Fail Before Launch

The startup graveyard isn't full of bad ideas. It's full of good ideas nobody actually needed.

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Case #001·Filed: April 4, 2026·6 min read

How to Validate a Startup Idea Before You Build Anything

Six months of building. Zero customers. You don't have to learn this the hard way.

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Ideas examined here. Get yours roasted →