Conventional Wisdom is no guide

In my lifetime conventional wisdom has authoritatively asserted:

1. By 1984, one in every three people on the planet will be infected with HIV.

2. At 12 midnight, 2000, there will be global chaos. Computers will shut down, and planes will fall out of the sky.

3. Stomach ulcers are caused by stress.

4. The international banking system cannot fail because of all the safeguards that are in place.

5. Global warming is man-made, and it poses a serious threat to the planet.

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