Building 3D Space
Suppose I have a collection of identical balls. Each has 6 connectors on its surface - 2 red, 2 green and 2 blue.
Then I have cables that come in 3 varieties, red, green and blue. Red cables can only plug into red connectors, green cables can only plug into green connectors and blue cables can only plug into blue connectors.
Now I specify a simple constraint: ever ball must have all its connectors filled.
Bingo - the system is a 3D system. Or is it?
Content written and posted by Ken Abbott firstname.lastname@example.org