Every discipline develops its own dogma and finance is no exception; we make assumptions about how markets are structured and investor behavior that underlie much of our theory. Those within the discipline either take these fundamental assumptions as given or are reluctant to question them. Over the last few months, I have been working on a new book titled "What if?", where I am looking at how financial theory and practice would change, if the bedrock assumptions of finance were violated or no longer true. I just finished my first installment, where I look at how investment practice and corporate...