I started looking into it as quickly as possible and
the results did not disappoint. Especially since when chatting to people about
my findings I saw a lot of different reactions for it. Some laughed, some
questioned others thought it was plain ought moronic. Thus it seemed obvious
that this was a perfect example to continue researching or fitting into my own
project, mainly because a gravestone (to some extent just as the roadside
example) is HAVING a conversation (despite of the lacking the ability to
progress it).