translate English to French: The life expectancy trend hypothesised by the United Nations in the calculation of the projections is rather conservative: it includes a slight reduction in the rate of increase of life expectancy and a slight closure of the gap between male and female life expectancies, two options which do not greatly affect our argument.
Il ne faut pas écarter l’idée que l’espérance de vie progresse encore plus fortement dans les prochaines décennies 1.