I tried yesterday to really reassure him we are qualified to keep him safe. He said, "I am not sure you know what you are talking about." which led to a long discussion of whether there was anyone who did, in his opinion. He said he thinks he is the only person who really knows what he is talking about.
My DD is a little like this, too. It took her a long time to believe that the astronomers really CAN guarantee that the sun is not going to burn out in her lifetime. However, I would really try to discourage this line of thinking for various reasons. It is certainly a danger among bright kids who regularly run into adults who get things wrong and whose memories are not as sharp as theirs for some things, but these kids really need to know that adults are in charge and can be trusted and have superior knowledge and information. Think how scary it must be to think at age 6 what no one else knows that whey are talking about! Again, at least based on my experience with DD, I would not spend a lot of time trying to convince these natural skeptics that other people know what they are talking about. I would present it as an absolute.
