“…However, this could be said of any alternative research method and, while randomisation is not a perfect solution, it is perhaps the least bad scientific option for evaluations (Uberla, 1981). Churchill, 1995;Raju, 1992;Rudicel and Esdaile, 1985;Ruse, 1988;Rutstein, 1970;Schafer, 1982Schafer, , 1985Schwartz et al, 1980;Shuster et al, 1985;Simon, 1977Simon, , 1994Spiegelhalter et al, 1994;Spodick, 1973Spodick, , 1982Steinberg, 1991;Stirrat et al, 1992;Takaro et al, 1976;Tauer, 1994;Toynbee, 1996;Trochim and Cappelleri, 1992;Van der Linden, 1980;Vere, 1981;Visscher, 1970;Wallenstein et al, 1980;Weinstein, 1974;Zelen, 1969).…”