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How about the digestive system?
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A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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This is a science community. We use the Dawkins definition of meme.
But saying that to make a hole in a sphere, you need to make two holes in the sphere is funny.
Very good observation. Now what about a hollow sphere?
All spheres are hollow (mathematically)
is x²+y²+z²<=r² not considered a sphere then?