Paul - you might be right; but then again, I'd suggest that working architects today are in many ways different from their great predecessors who laid out those wonderful old courses all over GB&I. Not 'worse' or 'better' -- just different: what they look for, how they see, their bank of conceptual ideas/frameworks. So maybe the answer isn't so clear cut, I don't know.
Peter
Peter:
The main difference in working with a map is that you find holes that fit a certain length of tee shot, because you're using a ruler to find them. Out on site, under foot, it is very difficult to estimate yardages, so unless you have an architect with a lot of experience, the result would generally be to have more holes where the drive goes over a crest at 220 yards, because it felt farther on the ground.
It would be completely different in Paul's premise, on an open piece of ground where you could hit balls around and judge everything by eye. I had a site like that in Ireland once, and it was great fun to trudge around and imagine golf shots. But the majority of sites are thick with vegetation, and in that case, routing without a map is quite difficult, and you tend to follow natural trails in the ground that you can walk -- whether they are really the best route for golf or not.
I was just out on the Forest Dunes site today, walking through two inches of snow and over stumps. Very difficult to get your bearings on where you are and how far you've gone -- and I've got more experience at it than most people.