There is nothing conceivable that the human mind cannot achieve.
A new airplane era is coming. Airplanes will be as common as the cars we have today. This shall be the airplane era.
Air planes shall be owned by individuals; and they shall be as common as cars today. Traveling even to visit a friend or relative in the same town shall be by air. There shall be airplane taxis. Cars will be the poor man’s means of transportation just as bicycles are today.
Do you see this as possible? I see it. There shall be air routes in the cities and parking lots for the air planes. The people who will be living in that era will know how to handle the issue. Many buildings may have to be put down to provide for the air routes.
Never say because you cannot understand how something can happen that it cannot happen.
The faculty or instrument called the human mind can do wonders. Do not let your own go to sleep. Use it to think of how to make the most of your life; how to make the world a better place than it is now. Use it to take yourself to greatness.