I was starting up my new start-up and I was finding it hard to get my desired co-founder to commit.  So I thought back over my experiences of the past few years.

I think the biggest asset of having a co-founder, is that you have another human being who is out in the world having experiences, learning new things, taking in feedback and data, observing how people react to things, processing how the world works, and then contributing their thoughts to the table.

Another brain thinking about the start-up when they're in the shower, doing exercise or commuting on public transport.

What I've found is that the problem I'm thinking about at all those times isn't necessarily the same as the problem my co-founder is thinking about.

So we either solve problems twice as quickly together, or we solve two problems at the same time.  And that's priceless.