Due Diligence: The Questions You Didn't Prep For

Every used car has a story the seller doesn't tell you. That's why a pre-purchase inspection exists.

A mechanic puts it on the lift, and within twenty minutes they've found the thing nobody mentioned. A leak papered over. A repair done cheap instead of right. Tires that look fine until you check the wear pattern and realize the alignment's been off for a year.

The seller isn't necessarily lying. They just stopped noticing their own car's problems a long time ago. You live with something long enough, it becomes invisible to you.

The inspection isn't there to catch a liar. It's there to catch the stuff that's true whether or not anyone said it out loud.

That's the part founders forget about due diligence.

You get through the pitch. The deck lands, the investor's nodding, and it feels like the finish line. It's not. It's the point where they finally get to look under the hood.

They'll call your customers. Not the ones you put on the reference slide — the other ones. They'll ask your top account how the relationship's actually going, and if there's a six-week support ticket you never resolved, that customer will mention it before you get the chance to.

They'll pull the financials apart looking for the number that's been "rounding up" for two quarters. They'll ask your co-founder a question you never rehearsed together, just to see if the two answers match.

None of this is adversarial. It's just what looking under the hood means.

The founders who make it through aren't the ones with nothing to find. They're the ones who already know what's there, said it first, and explained what they're doing about it — because the alternative is having your own customer tell an investor something you should have led with.

The deck gets you to the lift. Due diligence is the lift.

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There's a whole chapter on this in The Pitch Deck Book — check it out here.

Composite characters, invented companies. The mistakes are real; the people aren't.