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I really like that water molecule analogy. Personally, I have always viewed it as so feature of the topography of our universe in a higher dimension. Think about two two dimensional people living in a spherical plane. The furthest actual distance they could get from each other would be the diameter of the sphere. Yet they wouldn’t even know of the spherical nature of their universe.
Many, many years ago I used to have two Wyse50 terminals, running split screens each with two parts. I did a lot of support on remote systems (via modem!) and I would have a session on a customer system, source code and running on our test system and internal stuff. I didn’t have space for a third terminal.
At another job I had an office with a “U” shaped desk. I would spread printouts across half the “U” and swivel around between the computer and the printouts.