You really dont understand what the problem is. Pretend this was a car, and he's claimed that his little homemade car will travel at 800km/h. He's basically claiming that he's going to build a car better than any Merc, BMW, VW, Toyota etc etc EVER built. We aren't laughing at the fact that he TRYING, its the specifications and claims that he's making. He cant be expected to be taken seriously.....Those guys should be getting commendations and not condemnations. This is the problem with Africans......always hating on each other for no freaking reason.
Who ever made the first plane did not build it in a "special enviroment" but probably in front of his house.