After years of mostly wearing loafers and shoes with velcro fasteners, I got a pair of sneakers with laces. Said laces become untied the minute I go out the door. Well, likeliest assumption is that I'm too stupid to tie my own shoes. I can deal with that. However, when I bent down to re-tie my laces in the company of a friend of similar age (early fifties), she said "What's it with shoe laces any more? I can never keep them tied, either". Well, likeliest scenario is that we should both just wear crocs while we sit on the porch yelling at kids to get off the lawn, but it there anything to it? Are shoe laces today made of some new material that resists staying tied?