Silicon Valley knows people by watching other people know them. So much progress in my career started with someone vouching for me before I'd earned it. Little things like someone replying to a post, someone telling someone else "you should talk to this guy", making an intro. Someone inviting me to a dinner or event I had no business being at. I was nobody, and each vouch was a small public bet that I could be somebody, one day. Still on my way. In Silicon Valley, belief comes first. And…