What Lives in the Founder's Head

The first 5 people don't need culture written down. They were there when it formed.

The problem starts somewhere around 20, maybe 30. New hires watch the tenured ones, not the handbook. What gets laughed off in standups, who gets promoted after a crappy quarter, which decisions get quietly reversed and whether anyone explains why. That's the induction every new hire goes through whether you designed it or not.

I've sat with founders who were genuinely surprised by what their culture had become. They described what they thought they'd built and then described what was actually happening. The gap between the two was 2 years and 30 hires wide. They knew, even accepted, that some drift was inevitable. "Clear enough to transmit on its own" they said.

But even if it wasn't a surprise, it's still a shock.

When nothing's written down, culture doesn't disappear. It drifts. The gap fills with perks and team off-sites and a values poster nobody remembers. Everyone operates from their own interpretation of what the company stands for, and nobody's exactly wrong - but the directions diverge, slowly and then faster.

I fell into that same trap once. Warning after warning from people I trusted - write it down, make it explicit, don't assume it travels. Because really, how much could it drift? Turns out, a lot.
Write down the actual non-negotiables. Not the aspirational version - the real behaviors. What gets someone fired even when they're hitting their numbers. What gets someone promoted when it wasn't the obvious call. What happens when two values conflict in a real decision and which one wins. (Most companies have a version of this already. A Notion page, some bullet points, values nobody can define under pressure. The real thing lives in the founder's head.)

6 months after someone joins, you can tell the difference. The companies that wrote it down have something to point to. The ones that didn't are having the same conversation again.

And that burns.