Async means reducing likelihood that your work will be blocked by someone else (e.g. waiting for response from someone) as it might cause big issues when someon

Async means reducing likelihood that your work will be blocked by someone else (e.g. waiting for response from someone) as it might cause big issues when someone is 10 hours away. If you can't get any work done because you are waiting for someone who is sleeping, that's really bad. Single source of truth can be google doc, wiki, github issues/wiki, whatever. As long as it's single. The problem is when critical information is scattered in slack history, github issues and PRs, wiki and some odd google doc. It makes it hard to find information and you will end up finding contradictory information. Lack of single source of truth or not updating one will reduce the async property of the whole operation, among other things.