the video for the lazy 1 eD 0 nY 2 gPn 8 Edit replied to wrong comment first . <| sep |> Actually if one exists the other must necessarily exist , both an object with unstoppable force and an object that cant be moved can be described as having 0 acceleration . Velocity is relative to the reference frame an object is viewed from , so for either an unstoppable force or an immovable object there exists a reference frame where it would appear to be the other . <| sep |> I agree coal pollutes , more than natural gas fired plants . I do not agree with you assessment of the entire world moving in the direction of removing coal . The US and China have both stated recently that they will be increasing coal consumption . I agree with trying to reduce emissions , but if we cut our own throats economically while the big users in the world defy reducing emissions , then it is a counterproductive gesture .