[NicknamedBob]

"I was assured that it was a series of tubes.
Perhaps it is a quantum mechanics thing?"

Electrons travel along the surface of wires, essentially making the wire a virtual tube.

Another consideration is the use of cathode-ray tubes, otherwise known as TV tubes. Some people still occasionally use display devices filled so to speak with vacuum, rather than flat panels.

[Darksheare]

But the internet is both made of cats and a series of tubes.
I postulated that this meant that cats are made of tubes.
Scoutmaster found that his one cat is northern bean filled.
Hmm.

[Tax-chick]