 Second, Spencer was a Lamarckian while Sidgwick was not. For Spencer, moral faculty exercise hones each individual’s moral intuitions. Being biologically (and not just culturally) inheritable, these intuitions become increasingly authoritative in succeeding generations, favoring those cultures wherever moral common sense becomes more uncompromising all things being equal. Eventually, members of favored societies begin consciously recognizing, and further deliberately refining, the utility-generating potency of their inherited moral intuitions. “Rational,” scientific utilitarianism slowly replaces common sense, “empirical” utilitarianism as we learn the incomparable value of equal freedom and its derivative moral rights as everyday utilitarian decision  procedures.[19]