And that's because Humans and Neanderthals are actually the same "species".
BZZZZZT! Wrong! Same genus (homo) but different species. Neanderthals were homo neanderthalensis while modern humans are homo sapiens sapiens.
No. You walk into a grocery store and tell the checkout person what product you couldn't find. If it's a place with good service, she'll quite often ask you if you found everything you were looking for.
The security screener is the same as the checkout person - the public face of the organization.