Argument in support of people not having changed very much at all in the past 1000 years:
This sort of argument about logic and rhetoric could be taken directly out of any university or academy from Pre-christian Rome to medieval Paris to renaissance Bologne.
Argument in support of people having changed a fair bit of the past 1000 years:
The chances of one of you cleaving the other in half with their sword is, from rudimentary observation, far smaller.