"Is the black solution a secret, which should be kept from white thinkers in case they try to steal it?"

LOL, but seriously, YES!

Oh, and most folks keep family matters secret or to those in the immediate family. Also businesses usually do the same.

and for that last comment, LOL, you've been narrowing this down to a on-line chat board while I've been looking at it from a wider perspective (i.e.) community meetings, church gatherings, political social events (noDem/Repubo)...ha, no wonder we're bumping heads.