Well, The player, frisk, could have had a past where the humans may have taught them that monsters were "cold blooded killers" or something bad. so it gives frisk (the player) the option to choose between the two. the child could believe what the people told them, or choose to find their own path.

Description: mix Stop lookin at my description, damnit. [[SPRITES MADE BY ZER0. I ONLY MADE IT INTO A PAM SPRITE-]]