Is he going to have some kind of advantage in addition to knowledge? I feel that forming a harem if you don't have something that makes you very different from other people is very difficult. Maybe some magic or a stronger body or something.
I just feel like he is making progress on these too quickly. While it possible to figure things out eventually with only a general understanding it would still take lots of time. As in many years to get it right for most things
It is strange that you think that there are no water hammers in Westeros, with so many armors, if they weren’t there, then everyone would wear only chain mail armor or scaly armor at best, it’s immediately clear that the author doesn’t understand the Middle Ages at all
