Your narrowly crafted argument is the proper response, but this guy made an empirically testable statement relevant to the sciences. You might not have clicked his profile, but he&#x27;s also a PhD student of the sciences, meaning he has institutional access.<p>You won&#x27;t find adequate empirical backing on personality change over the lifespan, because the <i>ecology</i> of the evidence suggests that personality is stable. Disciplined speech is difficult and worthy.