K e(v+2D)t, #(10) 0 1 and the log-normal is undistinguishable from the 1/wt distribution, providing a mechanism for 1/f noise. However, notice that µ(wt) oo far in the tail we > e("4-2O" and the log-normal distribution is not a power law. The ingredient added by Levy and Solomon 111 is to constrain