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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 more importantly, calling any indentation a "hole" is a case of specifically ignoring the special significance of actual holes. You can't pass through an indentation.
If you were to tell an average English speaker that you were going to dig an indentation, chances are high that they would misinterpret your meaning.
On the other hand, if you told them that you were going to dig a "blind hole," I imagine they would have a much better understanding of your meaning and you would still be technically correct.
That's part of why I try not to talk to average English speakers
Haha fair enough