The anthropologist, Margaret Mead, was asked by a student what was considered to be the first sign of civilisation in ancient society. Surprisingly she replied that it was when you found a healed femur. If your leg is broken you can't escape from danger, catch food or get to water sources. If it is healed somebody else has bound the wound, moved you to a place of safety away from predators and cared for you. Civilised people help and show kindness to others.
I made this one before last month and it's now stuck on the back of my front door to remind me when [meaning only for food...I have suspended my cleaning for all clients to keep them and myself safe] I go out.