Anecdotal evidence here: Went to Japan, was out in a crowded area after dinner. A woman's wallet fell out of her pocket as she walked along. Literally a crowd o

Anecdotal evidence here: Went to Japan, was out in a crowded area after dinner. A woman's wallet fell out of her pocket as she walked along. Literally a crowd of people rushed to pick it up and give it back to her. Never seen anything like that. One of many strange phenomena observed on the streets of Tokyo at night.