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Special Episode: Ed Yong & An Immense World

This Podcast Will Kill You

CHAPTER

The Trade-Offs Between Different Types of Sensing

No animal needs to sense everything. A starfish has no need for eyes as sharp as an eagle because a starfish isn't trying to spot prey from miles away. All of this stuff, all of the messy biology that allows us to detect things in the world, cost energy - vision costs energy, smell costs energy. And they don't cost energy just in the act of sensing. Most of these senses aren't being used independently or in isolation ever. It's all part of this massive information gathering process.

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