Of course, it's not as if the architecture of the room or building itself doesn't set up these patterns. Behold the image to my right, which is the floor plan of what was the local version of my favorite chain hamburger joint of all time, Culver's. For some reason, a standard Culver's floor plan has this ridiculous room that attempts to cram the soft drink fountain, the ketchup/mustard and napkins in a tiny narrow space. In addition, there was only one place to get the lids for cups (left side of the fountain). You can imagine all the traffic snarls as a bunch of Midwesterners tried to (very, very politely) navigate their way through getting condiments, napkins and drinks in a 10 foot by 4 foot space.
In a typical synthetic organic chemistry laboratory, the siting of group equipment probably can generate the same problem. Rotovaps, vacuum pumps, common consumables, solvents and balances (and hoods!) will all generate easy traffic flow or ridiculous snarls where awkward people will have to dance awkwardly with people.
After you, no, after you, no, I insist, after you. MOVE OUT OF THE WAY &^*&*&*%%$%%%!
Sigh. Have a good weekend!