The day your co-founder stopped being independent

If you’ve got a co-founder, there was a day when they stopped being able to give you a straight answer about the venture. You probably can’t date it. They hadn’t changed. They’d just got bound to the answer.

I don’t mean they started lying to you. I mean the specific thing that made their read on your idea worth having quietly expired, and almost nobody notices it go.

What a co-founder actually gives you

Before you’re tied together, a good co-founder is the strongest evidence you’ll get. I’ve written before about a founder whose co-founder had spent years in the industry they were selling into and had independently run into the same problem from the other side. Neither of them had anything at stake in the other’s answer yet. Two people arriving at the same problem from different directions, before either had a reason to want it to be true, is about as clean as early evidence gets.

Keep that. It stays valid.

But notice what it was evidence about. The problem was real. That’s all it proved, and it’s worth having. It was never evidence that your solution would work, and it stopped being evidence of anything at all the moment you both signed.

What signing does

You now share the answer. If the venture works, you both win, and if it’s dead, you both eat it. Your co-founder is the one person whose stake in your hope is contractual. Your partner wants you happy. Your friend wants you encouraged. Your co-founder owns a share of the answer being yes.

There’s nothing wrong with them for it. The arrangement was designed to do exactly this. You wanted somebody who would commit, and they committed. The price of that commitment is that their verdict on the venture is now worth about as much as yours, which is to say it’s an opinion with skin in it.

The two-person room

The failure this produces is specific, and comfortable, and I’ve watched it run for months at a time. You raise a doubt. They talk you round. A fortnight later they raise a doubt, and you talk them round. Both of you come out of those conversations feeling like the idea survived something.

Nothing was tested. You’ve built a room with two people in it who need the same answer, and mistaken the acoustics for agreement from outside. In one way it’s worse than being on your own: alone, you at least know that both the doubt and the answer are yours. With a co-founder there’s a second voice in the room, and it sounds exactly like independence.

The window you get once

Here’s the part worth acting on. That independence has an expiry date, and it’s the day you sign. Most founders spend the window before it on the wrong question – whether they like working together, whether the skills fit, who owns what. Reasonable questions. But this is the only stretch of time in which the person who knows your market best has nothing at all to lose by telling you the idea is weak.

So ask them then. Before the equity, before the shared story, before either of you has a year in it: what would have to be true for this not to work, and do you think it’s true? You will get a straighter answer in that conversation than in any conversation the two of you have afterwards.

After the ink

Once you’re bound, stop asking your co-founder for the verdict and start asking them for the things they can still give you – what to build, what’s breaking, and whether the plan can actually be executed by the two of you in the time you’ve got. That judgement doesn’t expire. Only the independence does.

And keep going outside for the verdict to somebody who gains nothing if you carry on. You needed one of those before you had a co-founder. You need one more now, and it’s much easier to forget, because there’s finally someone in the room who agrees with you.