First objection: He has tenure. Getting fired is very hard when you have tenure. As a tenured professor you can scream for years that the sky is neon green and

First objection: He has tenure. Getting fired is very hard when you have tenure. As a tenured professor you can scream for years that the sky is neon green and you'll be fine. Secondly, he doesn't particularly discuss it with respect nor realism. However, let's assume for the sake of discussion that we have the same view on that. What about the second and third ones?