CZ: A live demo is worth a thousand pitches for a project that I'm trying to pitch at a conference.

"A lot of people try to pitch their projects to me at conferences, often taking selfies with me while doing the pitch," wrote CZ Yu X, co-founder of Binance. "It doesn't work. I'm not smart enough to understand a project in seconds. A live demo is worth a thousand pitches. Business cards work for me. It's easy for me to pass business cards to my team, it's much easier than asking for my contact details."