TromboneAl
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
- Joined
- Jun 30, 2006
- Messages
- 12,880
Those studies do not say anything about cause and effect. Because people who eat more red meat get more colon cancer doesn't mean that the red meat causes colon cancer.
Perhaps they are more constipated, and constipation causes cc.
Perhaps they can afford more meat because they are more well-off and have other habits that distinguish them from the other group.
Perhaps meat eaters are less health conscious in general.
Unless subjects are randomly assigned to the different groups, you can say nothing about cause and effect.
ER forum members are richer than non ER forum members. Does that mean that joining this forum causes wealth?
Perhaps they are more constipated, and constipation causes cc.
Perhaps they can afford more meat because they are more well-off and have other habits that distinguish them from the other group.
Perhaps meat eaters are less health conscious in general.
Unless subjects are randomly assigned to the different groups, you can say nothing about cause and effect.
ER forum members are richer than non ER forum members. Does that mean that joining this forum causes wealth?