What do you say at the end? "All hell, signs and reason"?
The first time I heard it I thought it said "all hell" too. Only for a fraction of a second until the context kicked in.
I watched the videos with a text editor open ready to make a list of all the details you got wrong. I didn't make a single note! I was going to quibble about how we don't need rule changes to be either unanimous or simultaneous, and how the rules actually do change over time. But I don't think it needs changing.
Great job!