It's sad to think that education regarding the inefficacy of rhino horn won't quench the alternative medicine market.
However unlike in other respects, they resemble it in its total inefficacy.
Nevertheless, this demonstrates the inefficacy of relying on market self-regulation to avoid excessive risk.
Word Origin and History for inefficacy
"want of force or virtue to produce the desired effect," 1610s, from Late Latin inefficacia, from inefficacem (nominative inefficax), from in- "not, opposite of" (see in- (1)) + efficax (see efficacy).