It is obvious for some posts in this thread that even with the arguments given some people will be unable to pass beyond the obvious and be able to
recognize a balloon shaped drone because they only will see the "balloon", giving full support to the "online activity report" use to screen out
people with lack of physics intuition and insight.
As Mark Twain already said: It is a lot easier to fool people than to convince them that they had been fooled.
The following is a sophisticated balloon shaped drone in action, be aware that the really cutting edge will not be shown in any YouTube video, those
are reserved to keep fooling people with intrinsic lack of attention to details.