“Take the entire 4.5-billion-year history of the earth and scale it down to a single year, with January 1 being the origin of the earth and midnight on December 31 being the present. Until June, the only organisms were single-celled microbes, such as algae, bacteria, and amoebae. The first animal with a head did not appear until October. The first human appears on December 31. We, like all the animals and plants that have ever lived, are recent crashers at the party of life on earth.”

“If the entire course of evolution were compressed into a single year, the earliest bacteria would appear at the end of March, but we wouldn't see the first human ancestors until 6 a.m. on December 31st. The golden age of Greece, about 500 BCE, would occur just thirty seconds before midnight.”

“We would never have scales, feathers, or breasts if we didn't have teeth in the first place.”

“Then to give the kids a historical perspective, Chacko told them about the earth woman. He made them imagine that the earth - 4600 million years old - was a 46 year old woman- as old as Aleyamma teaacher, who gave them Malayalam lessons. It had taken the whole of earth woman’s life for the earth to become what it was. For the oceans to part. For the mountains to rise. The earth woman was 11 yrs old when the first single celled organisms appeared. The first animals, creatures like worms and jellyfish, appeared only when she was forty. She was over forty five - just 8 months ago - when dinosaurs roamed the earth. The whole of human civilization as we know it, began only 2 hrs ago in the earth woman’s life…”

“But why live in these environments at all? What possessed fish to get out of the water or live in the margins? Think of this: virtually every fish swimming in these 375-million-year-old streams was a predator of some kind. Some were up to sixteen feet long, almost twice the size of the largest Tiktaalik. The most common fish species we find alongside Tiktaalik is seven feet long and has a head as wide as a basketball. The teeth are barbs the size of railroad spikes. Would you want to swim in these ancient streams?”

“We were not designed rationally, but are products of a convoluted history.”

“My building was constructed in 1896, and the utilities reflect an odd design that has been jerry-rigged further with each renovation. If you want to understand the wiring and plumbing in my building, you have to understand its history, how it was renovated for each new generation of scientists. My head has a long history also, and that history explains complicated nerves like the trigeminal and the facial.”