"for some reason, a lot of people treat choosing their cofounder with even less importance than hiring. Don't do this! This is one of the most important decisions you make in the life of your startup and you need to treat it as such.
And for some reason, students are really bad at this. They just pick someone. They're like, I want to start a business and you want to start a business, let's start a startup together. There are these cofounder dating things where you're like, Hey I'm looking for a cofounder, we don't really know each other, let's start a company. And this is like, crazy. You would never hire someone like this and yet people are willing to choose their business partners this way. It's really really bad. And choosing a random random cofounder, or choosing someone you don't have a long history with, choosing someone you're not friends with, so when things are really going wrong, you have this sort of past history to bind you together, usually ends up in disaster.
We had one YC batch in which nine out of about seventy-five companies added on a new cofounder between when we interviewed the companies and when they started, and all nine of those teams fell apart within the next year. The track record for companies where the cofounders don't know each other is really bad."
"for some reason, a lot of people treat choosing their cofounder with even less importance than hiring. Don't do this! This is one of the most important decisions you make in the life of your startup and you need to treat it as such.
And for some reason, students are really bad at this. They just pick someone. They're like, I want to start a business and you want to start a business, let's start a startup together. There are these cofounder dating things where you're like, Hey I'm looking for a cofounder, we don't really know each other, let's start a company. And this is like, crazy. You would never hire someone like this and yet people are willing to choose their business partners this way. It's really really bad. And choosing a random random cofounder, or choosing someone you don't have a long history with, choosing someone you're not friends with, so when things are really going wrong, you have this sort of past history to bind you together, usually ends up in disaster.
We had one YC batch in which nine out of about seventy-five companies added on a new cofounder between when we interviewed the companies and when they started, and all nine of those teams fell apart within the next year. The track record for companies where the cofounders don't know each other is really bad."
from https://startupclass.samaltman.com/courses/lec02/