Big Think

How evolution creates problem-solving machines | Michael Levin


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Evolution doesn’t fix things — it reinvents them. Michael Levin, a biologist, explains.

Esteemed biologist Michael Levin explores a captivating biological perspective of evolution — one that’s hard for engineers to come to terms with. In their work, making random changes to a system usually makes things worse, not better.
But evolution, on the other hand, doesn't just produce specific solutions to specific challenges; instead, it creates what Levin calls "problem-solving machines." These machines are made up of hierarchical biological hardware with incredible adaptability, capable of tackling various challenges without assuming specific environmental conditions.
Contrary to commonly held ideas about evolution, it doesn't just search for the best possible physical characteristics in organisms. It also uses signals and behaviors to shape how organisms function, so when things change or get damaged, the different parts of an organism can continue to function. From metabolic to physiological dilemmas, Levin highlights evolution’s remarkable ability to adapt.

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