You are sending a link to...
The Is-Ought Gap, Post-Modernism and the French Facelift
by Richard Butrick (January 2014)
Basically, the empiricist criterion of truth is that a statement is empirically true if and only if (1) it implies at least one observation statement or its negation and (2) it does not imply any false observation statements. The first clause rules out any logically true statements, “a rose is a rose” or metaphorically “true” statements, “life is a dome of many colored glass.” more>>>