Your blood vessels? Your downstairs plumbing? Even your lungs, the alveoli serve as teeny tiny tubes that are short and bulbous, that exchange gases through other tubes!
There are some other shapes, but what keeps the human machine going? Friggin’ tubes.
I mean, or literal.
Humans are a series of tubes to begin with.
Your blood vessels? Your downstairs plumbing? Even your lungs, the alveoli serve as teeny tiny tubes that are short and bulbous, that exchange gases through other tubes!
There are some other shapes, but what keeps the human machine going? Friggin’ tubes.
Just like the internet!
Tubes and storage vessels.
and processing chambers
So it’s fair to say that being a plumber is objectively the best career choice for a tube-based lifeform.