And if you look at sleep and dreams biologically, animals sleep and dream, and they rehearse and they do some other things that help memory and that are a very important part of sleep and dreams.
Iar daca te uiti la somn si la vise din punct de vedere biologic, animalele dorm si viseaza, si fac repetitii si fac alte lucruri care ajuta memoria si care sunt o parte foarte importanta din somn si visat.