The transition between the second and third eras of survey research has not been completely smooth, and there have been fierce debates about how researchers should proceed.
Ukushintshela phakathi nangenkathi yocwaningo inhlolo-vo yesibili neyesithathu akubanga smooth ngokuphelele, futhi sekube mpikiswano abanolaka mayelana nendlela abacwaningi okufanele uqhubeke.