Oh oh...and there's the problem, "some black guy on PBS"!
And IF it was long ago, he was probably one of the crazed "OUT OF AFRICA"/ Cleopatra was black, Blacks invented EVERYTHING ( all math, etc. and the whites "STOLE" it ) proponents.
You're welcome; glad to be of help.
46 posted on 12/28/2018 6:08:32 PM PST by nopardons