> You'd just calculate all the pairwise correlations and get nothing if they were solely totally nonlinear/interactions. I don't believe this. Most nonlinear c

> You'd just calculate all the pairwise correlations and get nothing if they were solely totally nonlinear/interactions. I don't believe this. Most nonlinear correlations also show up as non-zero (linear) correlation coefficients. There are really only a couple pathological cases I can think of where it would not happen.