I regularly get questions about what questions you should ask a potential co-founder, *before* you start building a startup together.

These are the questions Jon and I asked each other before we started working on Transistor:

https://docs.google.com/document/d/1H2AHATVSY8cwVmnZYY7zJbEsKRZKVfE0c0mK8E_1EXQ/edit?usp=sharing