Why didn’t I receive a notification of your reply sooner? no matter, yes indeed that pesky chessboard effect, I believe they call it “anistropy” which is a fancy term for “not the same in all directions” and I remember coming across it in one of those noisy papers (I literally mean noisy! as in pink, brown, white) written by smart people.
Aint that the truth about naming things? Lately I’ve started using “Zaphod Beeblebrox” in my property tests, but sometimes it can be absolutely brilliant, take for instance a joke by a former colleague:
“After you Tcl the Python you’re gonna need a little SOAP and REST.”