If you don't feel like reading the whole thing, imo: the most interesting part is page 40.

Replying back "Agreed on all" to an email that is basically "Here's what I'm thinking" is a contract? That's one heck of a precedent.

They argue this: https://www.law.cornell.edu/wex/promissory_estoppel

If a promise is made to a person outside a contract ,that is then relied upon, to that persons detriment, the case can move forward basically as a contract. The remedy here is that the founders agreements is enacted and held in enforce.

More discussion over here: https://news.ycombinator.com/item?id=39559597

Thanks!

I like the reference to the original source better than an editorial. Thanks