Takes place when a behavior is more likely to occur in the presence of stimuli that are similar to the discriminative stimulus.

Generalization takes place when a behavior is more likely to occur in the presence of stimuli that are similar to the discriminative stimulus.
Generalization refers to people's tendency to maintain a general idea about specific topics. For example, If i say that my friend is a scientist, most people will think that my friend is ugly with poor physical features because it is the generalization that people made about what scientists look like.

It depends on what you believe, if you’re christian that you would have been told that the first humans were created by god and that we’re all decedent's from adam and eve but scientist say otherwise