It could be that we all start having a lot of children in the future, and the growth rates are going to be higher, but from now on, these are the best projections we have, and this will make global growth decline and the gap between the rate of return go up.
Talvez no futuro, todos nós começaremos a ter um monte de filhos, e as taxas de crescimento serão maiores, mas por enquanto essas são as melhores projeções que temos, e isso fará o crescimento global cair e a lacuna entre a taxa de retorno subir.