//Call me boring, but two very large slots which identical twins simultaneously walk through might get you more data?
— not_morrison_rm, Nov 22 2019//

All that is need is to train on eye on one catwalk and the other on the other. It is of course problematic if there is more than two catwalks and
fabrics used are more flowing and nebulous.

Logical conclusion to this is that if you double the number of catwalks, then you halve the number of sequential cats that walk, and so if you have the same number of catwalks as cats then they can all walk at once. Now if you have that many catwalks they will all have to be quite short, otherwise they would not all fit into the same building. Maybe only long enough for one step. Maybe not even. Then they would be catstands. Now you have all the cats standing at once, for a single moment, and then the event is over. At this point it is easier to make a photography of the cats and publish it and lo! the furry kittens calendar is invented.

//if they're flat//
Hmm.. a "non-flat" catwalk/runway would make the walk
more interesting; get a bit more movement from the models
(including the special case of walking on an uneven surface
in very tall stiletto heels...).

If they're runways now, could there be shortened ones with
catapults and arrestors? Elastic webbing might be
appropriate for both. I'm seeing roller skates and a power-
assisted back somersault. wouldn't that be the right way to
launch a new range?

Two separate double slit experiments spatially next to each other, shouldn't effect each other should they? Attention span on the EM space, is my guess on what I was thinking.