20VC: Why Being First To Market Does Not Matter, Why You Do Not Have Defensibility on Day 1, How to Analyse Market Size and Present it to Investors, Vitamins vs Painkillers; Do Vitamins Survive Recessions and Good vs Great Messaging with Guy Podjarny @ Sn | The Twenty Minute VC (20VC): Venture Capital | Startup Funding | The Pitch | Podwise