AIR: The Absolute Ceiling?

Fighting and bombing will probably go no higher than 40,000 ft.—less than eight miles—unless new gadgets are perfected.

The trouble is in man himself. Man has been surpassed by his machines. Even pure oxygen cannot ward off bad muscular coordination; and the body and brain become weary, slow down above 35,000 to 40,000 ft. The human body, which lives a hand-to-mouth existence at any altitude, stores up little or no oxygen. The greatest hazard for altitude airmen is their conviction that they are perfectly all right when a reduced oxygen supply actually makes them act silly.

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