"As far as I can tell it doesn't exist outside of the person's mind." Why would you say something like this? You sound arrogant and stupid. You are talking ab

"As far as I can tell it doesn't exist outside of the person's mind." Why would you say something like this? You sound arrogant and stupid. You are talking about an article which says "he built the thing and flew it". And you deny that based on your balsa wood experiments? Someone else has done you the favor of posting a video of it flying. Perhaps you'll believe that?