writes about scientists as celebrities. He considers five examples: Einstein, Feynman, Sagan, Hawking, and Tyson; as well as his own experience. Krauss thinks that although public outreach is not necessary for all scientists, and maybe even a bad idea for some, it is important overall. In particular, he seems to suggests that celebrity scientists should use their platform to advocate for social issues and not just popularize science.
I am worried on agreeing with Krauss, because it is too easy for scientists to think they have expertise in areas where they don't and for others to believe them. Here, we should learn from Feyenman, about whom Krauss writes:"After winning the Nobel Prize, [Feynman] discovered that people, particularly Army generals, sought his advice on many issues, and after beginning to dispense it freely he suddenly realized he was pontificating on issues that he really knew very little about. As a result, he reined himself in."
However, this worry is bittersweet, because I tend to agree with many celebrity scientists on social issues, and so want them to advocate those issues. Even if they are not (the best) qualified to do so.