"The Rational Optimist," published in 2010, is one of Ridley's most popular and controversial books.
Buugga "The Rational Optimist" amma caqliyada waaqicinimada oo la daabacay 2010-kii waxa uu ka mid yahay buuggaagta ugu caansan ee loogu muranka badan buuggaagta uu qoray saynisyahanka Matt Ridley.