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The desert of criticism is akin to being in the midst of a blinding sandstorm, where you are forced to lean into the wind and take one step at a time without a clear view of where you are going. Walking by faith becomes difficult. Some of our former beliefs cannot survive the desert of criticism.

Ricoeur did not malign the desert of criticism, for some childish beliefs are incorrect and should be abandoned

Furthermore, it is only in coming down from the mountain that we are able to enter into the world and engage others who are different from us. To a great extent this is where life is lived and where we can make a difference in the world. Some people never leave the desert of criticism, and in time the memory of their childlike faith may dim. After prolonged exposure to the desert of criticism, some even lose their faith altogether. Ricoeur maintained that once one has entered the desert of criticism, it is not possible to return to the mountain of childlike faith. It is a little like leaving Eden. Something has been lost; life and faith can never be quite so simple again

But he held out the possibility of a third stage of religious faith. On the other side of the desert of criticism lies another mountain, not as tall as the mountain of childlike faith, with views that are not quite as clear and unobstructed. But we can, as Dr. Haught explained it, remove ourselves periodically from the desert of criticism and ascend this somewhat less majestic mountain. Ricoeur calls this possibility of a second faith “postcritical” naveté or a “second naveté.”

Here the truths and realities of our childlike faith can be reaffirmed or revised

Our faith will not be as simple as it once was, but it need not be lost. In fact, I believe our faith may become more powerful than before, for it will have weathered and survived the assaults of the desert of criticism.

1925-1926   Introduction of lightweight, air-cooled radial engines The introduction of a new generation of lightweight, air-cooled radial engines revolutionizes aeronautics, making bigger, faster planes possible.

  1917   The Junkers J4, an all-metal airplane, introduced Hugo Junkers, a German professor of mechanics introduces the Junkers J4, an all-metal airplane built largely of a relatively lightweight aluminum alloy called duralumin.

1904   Concept of a fixed "boundary layer" described in paper by Ludwig Prandtl German professor Ludwig Prandtl presents one of the most important papers in the history of aerodynamics, an eight-page document describing the concept of a fixed "boundary layer," the molecular layer of air on the surface of an aircraft wing. Over the next 20 years Prandtl and his graduate students pioneer theoretical aerodynamics.

1933   First modern commercial airliner In February, Boeing introduces the 247, a twin-engine 10-passenger monoplane that is the first modern commercial airliner. With variable-pitch propellers, it has an economical cruising speed and excellent takeoff. Retractable landing gear reduces drag during flight.

935   First practical radar British scientist Sir Robert Watson-Watt patents the first practical radar (for radio detection and ranging) system for meteorological applications. During World War II radar is successfully used in Great Britain to detect incoming aircraft and provide information to intercept bombers.

1937   Jet engines designed Jet engines designed independently by Britain’s Frank Whittle and Germany’s Hans von Ohain make their first test runs. (Seven years earlier, Whittle, a young Royal Air Force officer, filed a patent for a gas turbine engine to power an aircraft, but the Royal Air Ministry was not interested in developing the idea at the time. Meanwhile, German doctoral student Von Ohain was developing his own design.) Two years later, on August 27, the first jet aircraft, the Heinkel HE 178, takes off, powered by von Ohain’s HE S-3 engine.

  1939   First practical singlerotor helicopters Russian emigre Igor Sikorsky develops the VS-300 helicopter for the U.S. Army, one of the first practical singlerotor helicopters.