Today, Libra project leader David Marcus responded to a response from Visa and other payment giants to the Libra project. Smart contract pioneer Nick Szabo commented on his tweet: "You may want to ask yourself why the pressure is so great. Read some of the history that bitcoin pioneers know, such as the failure of e-gold. You have not been able to learn from history. Lessons, this allows you to relive the past failures at any cost.” David Marcus then responded to Nick Szabo: “Don’t misunderstand me. I’ve already appreciated Bitcoin long before I started this journey, and I still appreciate it. Growing. Just (bitcoin) is not a good trading medium."