What is it that Professor Oak studies about Pokemon in the original US release? Is he just collecting names, or is there more to it?
According to: http://bulbapedia.bulbagarden.net/wiki/Professor_Oak
He used to be a trainer, but then retired into researching pokémon. His lab is used to research Pokémon, unravel the mysteries of these creatures, and study their characteristics and behavior in a natural environment.
Pretty much to understand the varieties out there. Kinda like a scientist that only studies whales.