
Basically it’s an anti-dark-age view that talks through specific examples or art, culture, science, etc through the period that’s typically called the dark ages (~400-1300AD)
It was recommended by the always excellent ACOUP (https://acoup.blog) who’s often linked on HN too. This was the specific post covering Rome’s decline and fall and discussing the contrasting positions in academia on bright vs dark vs just continuing ages: https://acoup.blog/2022/01/14/collections-rome-decline-and-f...
Reality is Not What it Seems by Carlo Rovelli
The Brain: The Story of You by David Eagleman
I had a crack at reading the first Game of Thrones novel (I think it's just called A Game of Thrones) but my brain seems to be in non-fiction mode at the moment. I think I'm drawn to a kind of sweet spot halfway between "related to my everyday experience" and "removed from my everyday experience" - not sure I could read about programming or business at the moment, though I also haven't tried.
A belief that a kiss represented a bond, a contract, that the kiss itself was bound into the agreement, and represented a material part of the agreement does not surprise me. Nor, that it forms a bond of fealty, and to disrupt the ceremony required acceptance of a change in law.
Remember this is a time where at least for the nobility, to swear on oath you didn't do something was in some circumstances sufficient to be found not guilty. High status people did embarrasingly public penance to get out of excommunication.