Truthify

Eight blank years later he pops up in Richmond, and in the ninth and tenth years he endeavors to truthify his message, which has been cordially usurped and betrayed as fiction by "Mr. Poe"; when he dies in July 1838 immediately after writing his preface, in circumstances even more equivocal than those of his author's death eleven years later, he's still only in his thirtieth year to heaven, a threshold more poetical than mythical.

The amount val by which x+y must still be increased to truthify x + y ≥ N is one dimension of W:

Along these line, the distinction between falsifying and truthifying causal counterfactuals is particularly significant in the context of historical issues: Falsifying Case: If something-or-other — which actually did happen — had not happened, then certain specifiable consequences would have ensued. (Example: "If the ministers of George III had not taxed the Colonies, the American Revolution would have been averted in 1776.") Truthifying Case: If something-or-other — which did not actually happen — had happened, then certain specifiable consequences would have ensued. (Example: "If the American Colonies had remained subject to Britain, control of the British Empire would eventually have shifted from London to North America.")