I did a course in founder dilemmas this semester at MIT taught by Professor Matt Marx. The recurring theme from the course was that poorly considered early decisions could have lasting consequences. One of the main issues was how homophilous relationships (classmates, family) between co-founders had significantly lower success rates than non-homophilous. From this, the one lesson I've definitely learnt is to look for someone drastically different to myself when trying to find a co-founder. A suggested read is 'The Founder's Dilemmas' by Noam Wasserman, full of a lot of lessons that can often be avoided.
Please let us know what you think! We're trying to objectively find the themes that are trending around the world and then the least biased place to read about the theme. So there's four stages - we collect the stories from around 10 top new sources from around the world, collect trending data from sites including Wikipedia and twitter, process them to find the trends and biases and then output it into trending stories. It's for a project we've been working on and all the code is open sourced so we would love any contributions.