Like The Early Days Of The Internet,

Babies Are Born With The Instinct To Speak, The Way Spiders Are Born With The Instinct To Spin Webs. You Don't Need To Train Babies To Speak; They Just Do. But Reading Is Different.

... People Notice Differences And Expect Every Difference In Form To Convey Some Difference In Meaning.

Of Course The Theory Of Evolution Would Be Vacuous If It Offered A Glib Explanation For Every Inexplicable Act.

It's The Old Idea That The Process Of Evolution Is Some Push In The Direction Of Greater Complexity--in Particular Greater Intellectual Complexity. In One Twig Of The Tree Of Life, Namely Ours, Having A Big Brain Happened To Have Advantages. But That's Just What Worked For A Particular Species Of Primate 5 To 7 Million Years Ago.

Morality Comes From A Commitment To Treat Other As We Wish To Be Treated, Which Follows From The Realization That None Of Us Is The Sole Occupant Of The Universe.