Rotten wood cannot be carved.

Failure to reach Sam in a year of text-only contact is not a strong indictment of our rationality, any more than failure to transcend mass-energy conservation and speed-of-light limits is an indictment of intelligence. Some people just can't be persuaded, and others can't be persuaded within the resources and ethical principles we're willing to apply.

Sam has claimed repeatedly that he wishes to disengage from this discussion. This isn't a particularly credible claim, considering his willingness to violate it, but let's honor it anyway. Move on to someone who might be a better investment.