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By Technology Review
March 29, 2012
![[article image]](https://cacm.acm.org/system/assets/0000/7547/32912.techreview.cellular_computation.large.jpg?1476779401&1333051380 "Cellular computation")
Back in the 1960s, the IBM physicist Rolf Landauer showed that computation comes with a cost: every (irreversible) calculation, he said, always burns through a small amount of energy. That's why silicon chips operate at temperatures hot enough to fry eggs.
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