Siza ufingqe iphuzu likaSinclair kulesi sigaba mayelana nokuthi kungani ukuphila isikhathi eside kungeke kuholele ekwandeni kwabantu ngokweqile.
Context:Ukubuyekeza kweBoston Magazine kwabiza uSinclair ngokuthi "omunye wabantu abaphikisayo kakhulu kwezesayensi" futhi kwathi abaningi emphakathini wezesayensi babengabaza izimangalo zakhe ngokuphila komuntu isikhathi eside. Uprofesa wesayensi yezinto eziphilayo waseNyuvesi yase-Alabama uSteven N. Austad wathi, "UDavide ungumngane omuhle, kodwa ngicabanga ukuthi unecala lokwenza izimangalo ezeqisayo". Ebhala kuyi-Archives of Gerontology and Geriatrics, uCharles Brenner wafingqa ukuthi i-Lifespan "isibe umthombo onethonya lokwaziswa okungelona iqiniso ngokuphila isikhathi eside, kunezinsolo ezingamanga zokuthi izakhi zofuzo zokuphila isikhathi eside zigcinwa phakathi kwemvubelo nabantu, ukuba khona kwezinto okuthiwa zenza lezi zakhi zofuzo zisebenze, futhi kuthiwa ukuguqulwa okuphumelelayo kokuguga kumagundane okusekelwe ekuhlelweni kabusha okuyingxenye". Engxoxweni yango-2019, uSinclair walahla umbono wokuthi isikhathi eside sokuphila singaholela ekwandeni kwabantu. USinclair wathi: "Ukwanda kwenani labantu kuzolinganisela emashumini ambalwa eminyaka alandelayo, futhi abantu abanempilo enhle bazoba nabantwana abambalwa". "Isabelo sabantu emhlabeni wonke sesiyaqina kakade, futhi emazweni amaningi athuthukile siyehla, ngakho ukwesaba kwabantu ukuthi umhlaba uyogcwala ngokweqile abantu asebekhulile ababuthakathaka kuyiphutha ngokuphelele".
Ngokusekelwe kule ndima, uSinclair akakhathazeki ngengozi yokwanda ngokweqile kwabantu ngisho noma isikhathi sokuphila singase sibe side. Ukucabanga kwakhe kuwukuthi abantu abanempilo enhle baba nabantwana abambalwa futhi ngenxa yalokho inani labantu liyancipha emazweni amaningi athuthukile.