You should read the book "The Accidental Billionaires", the screenplay is based on that book.
As with every movie, they had to shortening some scenes like "hacking" houses websites and coding Facemesh in one night (in the book and in reality it was not that case - it took several days/nights).
As with every movie, they had to shortening some scenes like "hacking" houses websites and coding Facemesh in one night (in the book and in reality it was not that case - it took several days/nights).
And the book is missing a side-"story" too. There was already a "Face Book" kind of website called houseSYSTEM. And Zuckerberg tricked this guy: http://www.aarongreenspan.com/writing/essay.html?id=80
So the reality is even wilder than the movie.