@firstname.lastname@example.org So imagine you have a 2-dimensional figure in a plane, say it's a lower-case "b"
You can move it anywhere you like on the plane, or even rotate it, but you can't pick it up
So you can turn it so that the long stroke of the "b" is on the bottom and the loop is pointing up rather than to the right
But you can't turn it so that it looks like a "d"
To do that, you'd need to take it out of the plane
Similarly with 3-dimensional figures and hyperspace
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