Analogy: Not all Pitbulls bite, in fact most don’t, especially if they’re taken good care of, still they’re much more likely to bite than say Labrador Retrievers.
Consequently we should be more apprehensive when dealing with Pitbulls than Labs.
Let’s say you have a family, and you want a family friendly dog.
You go to a pet store and two dogs are available, one a Pitbull the other a Lab.
You ask the shopkeeper for information about the dogs and their behavior.
He says both dogs have been well behaved in his care and the previous owners said they never had any trouble with them.
Still you err on the side of caution and purchase the Lab.
Even when information about them as individuals is equal, the Lab is still much less likely to bite than the Pitbull, only if this particular Lab has a history of biting or other bad behavior does it make more sense to purchase the Pitbull if safety is paramount.
And if there’s little-no information about them as individuals, then it really makes sense to go with the Lab.
In the same way, if a black man and white man show up at a job interview with equal qualifications it may make more sense to go with the white man if there’s only one position available from a strictly economic standpoint, altho you may want to go with the black guy over the white guy sometimes if you feel sorry for them and you want to give them a chance.
When a black man and white man have equal qualifications, the white man may still be a bit more likely to outperform the black man.
Perhaps employers are finding this from experience and sharing this info with other employers.