Over the years, I have seen one over-simplification after another crash in flames. These are NOT quite false, but they are kindergarten level generalizations.

Overweight is due to excessive calorie consumption.
Cellular DNA is mostly junk.
In sexual reproduction, both parents make equal contributions to the offspring.
The sky is blue due to Rayleigh scattering.
The Earth's internal heat comes from radioactive decay.
Diseases are caused by bacteria.
Bacterial infections are fully controllable with modern drugs.
The stomach ulcer is caused by stress.
The human brain does not generate new neurons in adulthood.
Fat is the primary cause of heart disease.
The Earth and other planets orbit around the Sun.
The Food Pyramid has been proven to be exceptionally wrong, as in almost the opposite of what healthy nutrition should look like.
Light is composed of waves.
Stars were made of the same elements as the Earth, in roughly the same proportions.
Acquired characters cannot be inherited.
Carbon dioxide drives the Earth's climate.


https://en.wikipedia.org/wiki/List_of_fallacies
https://www.sas.upenn.edu/~dbalmer/eportfolio/Nature%20of%20Science_Asimov.pdf