Nu se doreşte o simplificare prea mare, deoarece, evident, se petrec multe lucruri, legate de schimbarea ritmurilor de lucru, răspândirea contracepţiei, rolul diferit al femeilor în cadrul societăţii şi longevitatea.
One does not want to oversimplify, as there are obviously a lot of things going on, to do with changing working patterns, the spread of contraception, the different role of women in society, and longevity.