Impikiswano malunga nokuba yeyiphi iminyaka ethathwa njengefanelekileyo emtshatweni, ungapheli. EYurophu naseMelika, umtshakazi nomyeni baluphala 'ukwaluphala ngokukuko': ngokusemgangaza ngokubonakalayo abantu abaneminyaka engama-35 nangaphezulu. Iqwalaselwa njengokukholelwa ukuba ukudala usapho kufuneka lukhule kwaye luzimilo nangokwezezimali. Kwilizwe lethu, abaninzi basasava ubunzima bokubhiyozela isikhumbuzo sesi-30, ngaphandle kokuba neqabane elisemthethweni. Ukuba kunjalo, abaphandi baseBritane bagqiba kwelokuba bafumanise ukuba leliphi iminyaka ibaluleke kakhulu emtshatweni kwimbono yesayensi. Intatheli iBrian Christian kunye nenzululwazi ye-Tom Griffiths isandula ukukhutshwa incwadi apho kubizwa ngokuba "kulawulo lwe-37%" livela. Ngaba yile, ngokutsho kwababhali, iya kunceda wonke umntu ukuba enze yonke into ngexesha.
Ke, leliphi iminyaka kufuneka iye kwi-ofisi yerejista, ngokutsho kweyeKristu neeriffiths? Kwiminyaka engama-26 ubudala. Liyinyaniso elokuba, eli nani linemiqathango - ibalwa ngokwe-algorithm elandelayo: Abantu baqala ukutshata okanye umtshato, abantu baqala ukucinga (ngokombhali) iminyaka eli-18 ukuya kwengama-40. Kwaye eli xesha lilungileyo lokugqiba komtshato ngama-37% lonke ixesha. Kwangelo xesha, iChristian kunye ne-Griffith ithathe isithuba seminyaka engama-22 (ukusuka kwiminyaka eli-18 ukuya kwengama-40) thabatha i-37%. Ukuba uqalile ukucinga ngokwenza usapho olungelulo kwiminyaka eli-18 ubudala, kwaye kamva, emva koko "umntu" wakho ofanelekileyo womtshato, ngokwahlukeneyo, ngokwakhe. Kwaye iiriffiths ziqinisekile ukuba ukufumana iqabane lobomi emva kweminyaka engama-26, mhlawumbi, kodwa nyaka ngamnye ukwazi ukudala usapho olonwabileyo luncitshisiwe.