Popular errors

Name(s): 
Erroneous popular myths
Nature

Each entry on this list of common misconceptions is worded as a correction; the misconceptions themselves are implied rather than stated. These entries are concise summaries of the main subject articles, which can be consulted for more detail.

A common misconception is a viewpoint or factoid that is often accepted as true but which is actually false. They generally arise from conventional wisdom (such as old wives' tales), stereotypes, superstitions, fallacies, a misunderstanding of science, or the popularization of pseudoscience. Some common misconceptions are also considered to be urban legends, and they are often involved in moral panics.

Source: Wikipedia

Claim 
In every century people have thought they understood the Universe at last, and in every century they were proved to be wrong. It follows according to some that the one thing we can say about our modern "knowledge" is that it is wrong. My answer is when people thought the Earth was flat, they were wrong. When people thought the Earth was spherical they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together. (Isaac Asimov).
Broader 
Strategy(ies) 
Value(s) 
Type 
(F) Fuzzy exceptional problems