I have an anecdote that may explain Obama's fascination with other people's shoes.
After many years of installing fire sprinkler systems, I couldn't help but look up at the installations in everything from open warehouse-big box stores, to office buildings.
Within seconds, I'd silently critique the symmetrical alignment of the sprinklers, the distance in between them, any "shadowed" areas, earthquake bracing, take a peek at the riser (valves), etc., while my son counted the people that tried to figure out what I was looking at and my X pretended she didn't know me.
Perhaps Potus has some similar occupation related nostalgia.
It can take a quite a few years to overcome.
;~)
Marvelous!
Taking it one picture at a time:
I had my own post about “shoes”, but I didn’t ping ya. You can guess the content...a black man, shoe size and a Japanese man.
Hmmmm...I think you’re on to something!