 For example- say a child is shown three horses by a parent and told these are called "horses"- she needs to work out exactly what the adult means by this word.She is much more likely to define the word "horses" as referring to either this "type of animal" or "all animals", rather than an oddly specific example like ""all horses except Clydedales"", which would be an unnatural concept.Meanwhile, the likelihood of 'horses' meaning 'all animals' when the three animals shown are all very similar is low.