Exactly.   Failure to even want to communicate, by Mr "Fuck Off".   At least we know what the F stands for.

Look, it's very simple.   Should even be simple enough for Mr. FO. Either you can provide proof that Jefferson had 4 childen by Sally Hemings or you cannot.

As Mousethief has noted:   "If you make a claim, it's your job to support it. It's not my job to convince myself you're right. If you can't support it I have no recourse but to think you are lying or deluded."

Gee I wonder if which one it is for Mr. FO:   lying or deluded?

Actually there's one more possibility, and it's the one I'd put my money on: he has such a fragile ego that he can't bring himself --ever--to admit he is wrong.   Again.

Which, as I've noted before, accounts for the waterlogged state of his carcass.

Once more with feeling:   the idea that Jefferson had 4 children by Sally Hemings is a matter of probability, not a fact.

And Mr FO has provided precisely zero proof that this is not so.

We're still waiting.

What's more, from the number of times he says "Fuck off" I sometimes get a inkling that he might not be happy.   Which would be a true tragedy, since as I've noted, the main purpose of Mudcat is to make him happy.