Racism in a nutshell

Suppose the mood strikes you and you're looking for casual sex. You go to a club, and the club has two rooms. Each room has 100 people, who are on average similarly attractive. At the entrance, you are given this bit of information: In room #1, there are 99 healthy people, but also one with a sexually transmitted disease. In room #2, there are 90 healthy people, but also 10 with a sexually transmitted disease. You can visit room #1, or room #2, or both. As you prefer. Given the above information, tell me you're not going to restrict yourself to the people in room #1 only. This is racism. You could also visit room #2. There are 90 healthy people in there. Maybe your soulmate is there. But you won't. Now for a small tweak. Imagine, instead of each room with 100 people, the rooms are like this: In room #1, there are 900 people, and 9 of them have an STD. In room #2, there are still 100 people, and 10 of them have an STD. Now the decision is even cleare