
My "snipe" backfired over your nonsensical reply? Kewl.
Here. I'll try a serious angle.
If the footwear requirement is safety-based, it seems pretty arbitrary to me. I wear canvas slip-ons. A can of tomato sauce, falling from the top shelf, will do nearly as much damage to my toes than if I had worn nothing. People wearing sandals or open-toed shoes are not afforded any protection from falling products.
Women wearing stiletto or other high heels would be considered "safe" even though their footwear would likely make them more prone to falling if they encountered a slippery surface than if they had been barefoot.
Now, this rule may be enforced for insurance purposes. Perhaps it is a requirement in a retail store's liability policy. But I have not seen any compelling reason to see this restriction as
reasonable. It appears to me to be little more than a social convention, along the lines of
don't swim after eating for one hour or you'll get cramps.
If anybody can bring forth evidence to support the notion that the lack of footwear is a significant safety hazard in retail stores, I'd be happy to look at it.
Until then, I'm inclined to believe we're simply dealing with an arbitrary social rule.