There is a spectrum for lots of human traits. Some people are born with no fingers. Others are born with 6, but there's no doubt that there is an established norm for the number of fingers, right?
There is an established standard, so do you call those with 6 fingers abnormal or outliers?
What is the percentage comparison? I believe that once the percentages are higher then more than one item in a group can be considered normal.
Like race, which one is the norm?
Google is my friend. (Actually google sucks and is more about advertising than search, but that's another thread)
According to available medical information, the percentage of humans born with six fingers (a condition called polydactyly) is estimated to be around 0.2% of the population, meaning roughly 1 in 500 to 1,000 babies are born with extra fingers on one or both hands.
Estimates are as high as 10% of people are not straight.
Left-handed = 10%.
Approximately 10% of the world population is black.
49% of the world population is female, is that close enough to not be abnormal?
So, if a person is left-handed, black, non-binary person they must be really abnormal...
Anyway. This is my last post on this topic. It is obvious that you have a very strict adherence to a definition of a specific word, that I do not.