Her specialty is 19th- and 20th-century decorative art, a field with a finite number of genuine authorities, which gives her an edge.
There is some dispute over what kind of reasons they must be, but for our purposes we can just follow Joseph Raz, who holds that genuine authorities give "protected reasons" by their dictates, where a protected reason to φ is a reason to φ and a reason to disregard some reasons against φ-ing.
But Lawrence, whose experience gives him genuine authority on Kurdistan, could have provided more original analysis of the questions that gnaw at the reader.
More to the point, he had an abundance of that elusive authenticity and genuine authority to which today's politicians aspire.
He sometimes sounds more Victorian than his subject, but he is a genuine authority on Dodgson, and we are unlikely to need another.
The entire sequence of events enables Trump to create a meta-message, which is that there's no such thing as truth and no such thing as genuine authority.
Williams, a genuine authority, believes the number of black starters, alone, indicates that the N.F.L. has reached the point where "nobody is going to pass up a guy who can play" based on skin color.
As speaker of the Palestinian legislature, Mr. Qurei pushed for giving the prime minister's post genuine authority when it was created this past spring as part of political changes demanded by the United States, Israel and the Palestinians themselves.
These days, many of the world's most prodigious and talented spammers are hidden in Eastern Europe and Russia, where, despite increasingly vigorous efforts, the F.B.I. and other international law-enforcement agencies have little genuine authority.
All this -- the tawdry aura of literary celebrity, the genuine authority of the great writer, the shameful physicality of the old woman -- combines to make Costello one of Coetzee's most layered, elusive and formidably alive characters.
Of course, many laws fail to satisfy this demanding standard, but Raz also argued that only a rule of recognition employing source-based criteria of legal validity criteria such as "enacted by parliament" or "proclaimed by the king"—could possibly possess genuine authority.
