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Lesson 2 of 8

Evidence vs assumptions

Know which things you have seen and which you are guessing.

What it is

Evidence is something observed and traceable: a cited source, an interview you held, a number you measured. An assumption is a belief you have not checked yet.

Why it matters

Decisions built on unlabelled assumptions feel certain and fail quietly. Keeping the two apart tells you what to test first.

How DeliverX does it

  • Research items keep their source references; gaps are kept as gaps, not filled in.
  • Only notes from meetings you actually held count as evidence; DeliverX never invents customers or quotes.
  • Conflicting evidence is flagged and kept, not averaged away.

Common mistake

Treating a confident paragraph, from a person or an AI, as evidence.

Try it in your project

Open your project’s record and find one claim you would want a second source for.

Open your projects