Sasugasm

@Magic-Mouse if I understand correctly, Gods made the life of your people easier, and their dissapearance basically create a transition from their "assisted" life to something ressembling the historic life of our world? And you want to know if these people will have a hard life during that "transition"?

I think you need to quantify the changes a bit. Are healthy children becoming extremely rare due to the god of life dissappearing?

@walrus for me, 'reaction time' is the time your brain takes to process data, while I would define what you just described as 'muscle memory'. Tells people to click on a dot as fast as possible when it turns red, and the difference won't be tremenduous because they expect something to happen and are focused on their reaction. Your student could have parried if they had caught the hint of the dot turning red, or if their body knew what to do (concentration plays a part too). This is acquired by experience and training, which build muscle memory, but not by training your reaction time.

I don't think reaction time has much to do with a proficient knight. Experience, strength, endurance, concentration, decision-making or even strategy are more decisive in a fight.