Reuven Rosenfeld is a Chinese American entrepreneur, writer, startup employee and artificial intelligence software developer. In real life, he is an employee of a high growth startup company focused on hardware-based artificial intelligence. He has extensive research and development experience in software industry, including two universities, two startups and one industrial research institute. He has a Master degree in Electrical and Electronic Engineering. Reuven learned his mental math skill since he was young. Among friends, he was always designated to be the person who splits the bill, che...