OTAKUjbski
TK421
I don't know anybody has done something as silly as me. I built the Pyramid, but realized my Oracle was a few turns away so I didn't switch civic. Then I totally forgot its presence until I researched Monarchy.
I've done that too many times to admit.
I've even forgetten to switch civics when I built it -- regardless of what other wonders I have going, lol.