Human intelligence.
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A heart that beats less than 100 times per minute.
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That is an excellent question. Answer: that I can walk down the street without fearing for my safety and life. It is a thin sliver of geography and history that combined to make that possible.
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I’m grateful for my daughter Sarah’s left kidney which has kept me alive for nearly 10 years.
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That you don't actually use the word "folks" in regular conversation
And you, Liebling 
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To a folksy Midwesterner, it makes him seem less elitist. Stop dialect shaming!

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The overlooked aspects of modern medicine. The stuff that would have killed us in past, but now is accessible by appointment or in the drug store and is easily an afterthought. Dentistry, basic pharmaceuticals, etc.
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Oh and contact lenses.
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Food security. Less and less people worldwide know what food shortages are. And yet, my grand-parents for example knew what hunger was.
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