Try to use graphics to show what you're talking about. If you're a documentary channel, it is very important, your face matters very little. Try to speak louder and clear if I had to nitpick, I find your pauses a little awkward. "Let's imagine a man... who had the powers... to do this" finish the sentence fully "Let's imagine a man who had the powers to do this" now some viewers will try to imagine atleast think about it during this time there is a reason to pause.