Become a magician

Discover the unexpected magic of science!
Discover relevance and irrelevance

"Irrationality" almost always involves failure to sort relevance from irrelevance.
starting with failure to recognize multiple causes and effects

Relevance is central to rationality.

Irrelevance is an infection leading to pseudoscience.

also bigotry, prejudice, racism, fundamentalism, ...

people interact
Sorting relevance from irrelevance requires recognition of the many interacting causes and effects...and then recognizing the relationships between them.

a candle in the dark
People sunbathe to get tanned and get no tan.
People lather up to avoid sunburn, and those who don't, don't get burned.
People avoid the sun when the air is hot to avoid getting sunburned.

Almost nobody sees that temperature has nothing to do with sunlight's ability to cause sunburn.  Temperature is irrelevant to actinicity of sunlight..

light is...??