These Cro-Magnon people were identical to us: they had the same physique, the same brain, the same looks. And, unlike all previous hominids who roamed the earth, they could choke on food. That may seem a trifling point, but the slight evolutionary change that pushed man's larynx deeper into his throat, and thus made choking a possibility, also brought with it the possibility of sophisticated, well articulated speech. Other mammals have no contact between their air passages and oesophagi. They can breathe and swallow at the same time, and there is no possibility of food going down the wrong way. But with Homo sapiens food and drink must pass over the larynx on the way to the gullet and thus there is a constant risk that some will be inadvertently inhaled. In modern humans, the lowered larynx isn't in position from birth. It descends sometime between the ages of three and five months - curiously, the precise period when babies are likely to suffer from Sudden Infant Death Syndrome. At all events, the descended larynx explains why you can speak and your dog cannot. Bill Bryson
Some Similar Quotes
  1. Until one has loved an animal, a part of one's soul remains unawakened. - Anatole France

  2. Such short little lives our pets have to spend with us, and they spend most of it waiting for us to come home each day. It is amazing how much love and laughter they bring into our lives and even how much closer we become... - John Grogan

  3. If having a soul means being able to feel love and loyalty and gratitude, then animals are better off than a lot of humans. - James Herriot

  4. Animals are reliable, many full of love, true in their affections, predictable in their actions, grateful and loyal. Difficult standards for people to live up to. - Alfred A. Montapert

  5. Holding this soft, small living creature in my lap this way, though, and seeing how it slept with complete trust in me, I felt a warm rush in my chest. I put my hand on the cat's chest and felt his heart beating. The pulse... - Haruki Murakami

More Quotes By Bill Bryson
  1. Not one of your pertinent ancestors was squashed, devoured, drowned, starved, stranded, stuck fast, untimely wounded, or otherwise deflected from its life's quest of delivering a tiny charge of genetic material to the right partner at the right moment in order to perpetuate the only...

  2. If this book has a lesson, it is that we are awfully lucky to be here-and by 'we' I mean every living thing. To attain any kind of life in this universe of ours appears to be quite an achievement. As humans we are doubly...

  3. As my father always used to tell me, 'You see, son, there's always someone in the world worse off than you.' And I always used to think, 'So?

  4. I come from Des Moines. Somebody had to.

  5. Thoreau was an idiot.

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