>>70345469Because people trust people to tell people the truth about other people. It's not his manager though, but people who have worked with him in the past and have now moved into bigger companies, or other programs. If you worked with your friend at a konbini, and your friend went on to work at a F500 company, and they needed someone for a role that you're good at, wouldn't you want him to tell his boss about how good you are for the job?
