‘an object, quality, or event whose presence or occurrence indicates the probable presence or occurrence of something else.’ 1

This brings forth the idea that one looks at the information being given, are we looking at the sign or is that not seen in the presence of the occurrence or presence. Are we blindly following directions without seeing the sign? I looking into this as a project idea I have evaluated the option of expanding, as I do not feel that the sign has to be a conventional sign ‘go left’ or ‘fire exit’ what does the tattoo on someone’s back mean as a sign?

There are many signs and this dates back millennia as before spoken words there was cave art. This topic is clearly an expansive arena.. One risk would be that it becomes an Ed Ruska 26 Gasoline Stations or a disjointed collection.

1 Google answer to the search term signs, accessed13/06/2021