BWM: Could be something as simple as a missed hyphen in Jim’s post. ‘Archaeology-tour guide’
Changing "archaeologist tour guide" to "archaeology-tour guide" requires more than the addition of a hyphen. And Jim's post (about 7 minutes before yours) shows that it was not a typo.

Jim: Do you honestly view history as one civilization turning the lights off and handing the keys over to the next occupants as their civilization died off Nigel
It was a figure of speech
No, I do not take that view, but your post made it appear that you did. If it was just a 'figure of speech' then it was a poorly chosen one.