@DanielleFong "for redundancy" sounds like a bad evolutionary explanation
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@psygnisfive have a better one? - 9 more replies
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@DanielleFong the real question is "why do we have 2 kidneys" since we have only a single copy of most organs. What's special about kidneys? -
@eshear & lungs, legs, brain lobes, eyes, gonads... - 2 more replies
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@DanielleFong two separate systems. Like coffee filter, kidney has processing limit vs heart which controls the whole system performance -
@kcfaul dual pumps can work - 3 more replies
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@pmarca@daniellefong Jolly good chap! That's right… Just give it some time. -
@brandodaily@pmarca yeah I know! Seriously think backup hearts are going to be a common elective surgery
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@DanielleFong if I recall correctly the human heart is two pumps in unison and sort of bilaterally symmetrical, almost like two organs fused -
@DanielleFong this diagram shows how the human heart starts as two redundant tubes, then fuses together and re-formspic.twitter.com/z8ECFqoECV
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