Lots of kinds of analyses require some kind of normalization or whitening to work properly. The problem with PCA is that everyone knows about it and kind of un

Lots of kinds of analyses require some kind of normalization or whitening to work properly. The problem with PCA is that everyone knows about it and kind of understands it, and thinks that it'll magically tell them something interesting about their data. Especially when you can take the first three components and make cool-looking 3D plots...