This is one of those cases where the word “average” is kind-of unhelpful. Mean? Mode? Median?
I would guess Median is also 2.
I meant in more explicit terms. Number of companies with two founders, with one founder etc.
Convertible notes are (usually) more like a loan that you (usually) pay back with equity instead of money. SAFE is less like a loan, so you avoid things like interest on the loan.
Essentially, it's a convertible note without the debt aspect.