The oldest and most primitive human dates back about 7 million years, according to a skull found by scientists in Central Africa.
"That's so depressing," I say to my husband, Larry. "I can't believe that in 7 million years we haven't evolved any further than this."
"This" being a world in which half the people live on less than $2 a day; in which 1 billion people go to bed hungry every night; in which 115 million children never go to school at all; and in which 27 million people live in some kind of slavery.
"You're looking at this all wrong," Larry assures me. "Seven million years is an insignificant blip in the history of the cosmos."
And, Jewish tradition tells me, the first 6,994,235 years hardly count.