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Field Notes

Validate before you build.

Playbooks, comparisons, and market-signal data for founders who'd rather know than guess.

FeaturedPlaybook

How to Know If Your Startup Idea Is Good (Before You Build It)

Most founders can't tell a good idea from a bad one because they're asking the wrong question. Here's the five-signal test that separates real demand from wishful thinking.

Jul 14, 20264 min read
IdeaSignal · Field Notes
Reddit Market Research: Startup Validation Guide 2026
reddit market research

Reddit Market Research: Startup Validation Guide 2026

Master Reddit market research for startup validation. Discover demand signals, willingness-to-pay, & competitor gaps with our 2026 guide.

Jul 15, 2026 · 16mRead
Sample Article Title for Testing
test

Sample Article Title for Testing

A sample article for testing webhook integration with Outrank

Jul 15, 2026 · 1mRead
Data & Signals
Data & Signals

Your Market Is Already Talking: Where to Listen

The evidence that your startup idea will work already exists in public. You just have to know which rooms to stand in. A field guide to the eight places founders find real demand signals.

Jul 12, 2026 · 4mRead
Comparison
Comparison

5 Ways Founders Validate Ideas, and Where Each One Lies to You

Asking friends, running surveys, building a landing page, pre-selling, asking ChatGPT. Every validation method has a blind spot. Here's what each one really tells you, and what it hides.

Jul 10, 2026 · 4mRead
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