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A board that accepts a narrative has stopped doing diligence

The Inventor: Out for Blood in Silicon Valley · 2019

The idea

Theranos raised money and recruited a famous board without anyone outside the company having verified that the device worked. Investors and directors accepted the founder's account because it was compelling, consistent and told by someone they wanted to believe. The Inventor is useful for venture and growth interviews precisely because it is not a markets story: no model failed, no price moved. A group of experienced people substituted a narrative for evidence. The lesson for a diligence process is that a story, however coherent, is a claim, and a claim about a technology is tested by seeing the technology work.

A compelling story is a claim to test, and the test for a technology is watching it work.

When it works

Venture and growth diligence, and any investment where the case rests on a founder's account of something that cannot yet be seen.

When it may fail

Early-stage investing necessarily runs on belief about things that do not yet exist. The point is not to refuse the story but to know which parts of it have been checked.

How to use it

Write down the three claims the thesis depends on and, for each, what you have seen with your own eyes or heard from someone with no stake. A claim with nothing in that column is the diligence still to do.

Where it came from

Documentary The Inventor: Out for Blood in Silicon Valley · 2019

What the source says. A diligence failure rather than a markets one: what happens when a board accepts a founder narrative in place of evidence.

Find it on the shelf Written from L3VLUP’s own notes on the work · reviewed 2026-10-16

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