I learn something new every day.  Today I learned that one of the founders of Signal calls himself Moxie Marlinspike, although of course that's not his real name.  He X'd today:  "There are so many great reasons to be on Signal.  Now including the opportunity for the vice president of the United States of America to randomly add you to a group chat for coordination of sensitive military operations.  Don’t sleep on this opportunity…"

Moxie says he is 45 years old and "I've worked as a founder, engineer, sailor, captain, and shipwright. I used to travel a lot; I've hopped freight trains across the US from coast-to-coast."  

One of the nice features about Signal is that you can set it to erase everything after a certain number of hours, or days, or weeks.  Which gets around those pesky laws that government documents be preserved, for later storage in Florida resort bathrooms.  Today only the little people obey laws.