If anything it is more of an attention surplus than an attention deficit.

This is a point that Dr. Richard Barkley, one of the major researchers in ADHD in the last few decades, has stated slightly differently. In a sort of jest, he mentions that [ADD] should be called “intention deficit disorder” as there is plenty of attention to be given to things, sufferers just lack a lot intentionality behind their actions. This ultimately manifests as an executive disfunction which prevents this slice of the population from subconsciously knowing how to prioritize or assess the importance/value/urgency of stimuli.

> I believe people with ADD have a natural advantage in pre-modern settings

Totally, yeah. I can't prove it of course, but I've noticed countless of times that I seem to be extremely more aware of my surroundings than my friends etc. I hear and see more compared to them, which has positive and negative sides.