This is not the pub. You can't dismiss something with the wave of a hand just because you heard about an even neater idea. Because we all have Google at our fingertips, and personally I have 'Mitigation of Hazardous Comets and Asteroids' ( http://www.amazon.com/Mitigation-Hazardous-Comets-Asteroids-... ) on my desk.

Things are just not as simple as you present them, and I hope you'd realize that if you put in the time and effort.