The shopping cart test is more important.
Huh! I'd not heard of the "shopping cart test", despite having thought along the lines of its essence scores of times over the course of my life....
I worked at a grocery store briefly in the days of my youth, and rather enjoyed collecting the carts - amidst thoughts of "What a bunch of fucking lazy asses!", of course. But stringing long chains of them together, and muscling them places while surrounded by both stationary and moving people/vehicles seemed a fun challenge.