(meanwhile... this is the statement i am still confused by..

http://libnoise.sourceforge.net/docs...dgedMulti.html

Ridged-multifractal noise does not use a persistence value. This is because the persistence values of the octaves are based on the values generated from from previous octaves, creating a feedback loop (or that's what it looks like after reading the code.)

a line or two concreting the intent of this would be much appreciated