Scientists often get annoyed, or even angry, when creationists claim "evolution is just a theory". It's often unclear whether creationists are deliberately using a widespread confusion about the use of the word "theory" in science to their advantage or whether they genuinely believe that the theory of evolution is simply a guess, an idea, that should be viewed as no more important or valid than any other idea about how life on Earth developed.
As a science teacher, I often emphasise to my students the precise meaning of the word "theory" as it is used in science and contrast it to the everyday meaning of the word which suggests a sort of speculation or guess.
Racism and Sexism are two words which seem to have obvious meanings. In everyday usage they may simply mean "p