3 ms·
Does not rule out shared cause. You observe X and Y and find a correlation. You still have to consider that X and Y are caused by Z. Noise in Z will have echoes
by kghose 12y ago
Does not rule out shared cause. You observe X and Y and find a correlation. You still have to consider that X and Y are caused by Z. Noise in Z will have echoes in both X and Y.
- cafebeen 12y agoExactly. They assume this isn't happening, so it's not a very useful idea in practice...