Try this logic on for size and validity:
Consider a world where everybody is special or different and where normal is defined as the most popular choice or the most likely outcome. Being different and special is clearly the most popular choice or outcome. Therefore being different and special is clearly normal.
If being different and special is clearly normal, and everybody is special and different, everybody must be normal because we defined normal as the most popular choice or most likely outcome (being different).
If everybody is normal, nobody is different and only some people may be special (those who weren’t simply special because they were different).
Clearly, this world cannot exist. In fact where normal is given by a majority, a priori, we cannot have a world where a majority of people are different – because that would imply being different is normal.