Robert McMath - katswiri wa zamalonda - akufuna kupanga mndandanda wazinthu zonse zatsopano zogula.
M’zaka za m’ma 1960, anayamba kugula ndi kusunga kope lazinthu zatsopano zilizonse zimene akanatha kuzipeza..
Zomwe McMath sanaziganizire ndikuti zinthu zambiri zimalephera. Chifukwa chake zosonkhanitsira zake zidapangidwa makamaka ndi zinthu zomwe zidalephera kuyesa kugulitsa.
Kumvetsetsa kuti zinthu zambiri zimalephera pamapeto pake zidasintha ntchito ya McMath. Zosonkhanitsa zokha- yomwe tsopano ili ya GfK Custom Research North America - yomwe nthawi zambiri imakhala ndi opanga zinthu zomwe ogula amafuna kuphunzira zabwino kuchokera ku zolephera zakale.
Gwero: The Guardian, 16 June 2012
Lofalitsidwa: akonzi IvBM
