And the state of golf agronomy in that time and place so long ago is surely part of it, probably a huge part of it. But the fact that one couldn't transport that original Scottish linksland agronomy out of Scotland when golf first migrated out of Scotland hundreds of years after it began there, is an even greater part of understanding the evolution of golf and architecture world-wide.
Yes! And not just agronomy, but the fact it was a winter game, played in a time and place where winters were cold, dry, and windy. Not simply because there was business to take care of during the growing months, but without dormant turf it would have been a vastly different game, huh?
{Bit of a ramble here: It does give one thought, the spread of the game to parts distant. Given the wide variety of conditions in geographies to which the game spread, how much of the interest in these non-linksland areas is down to things like architecture, and how the game was played on the links, and how much down to other aspects, like the mental challenge? Is there one ideal, like "firm and fast" or "ground game," or is it misguided to attempt that outside the golf equivalent of what the French call "terroir" (climate, soil)?}
And the origins of bunkers are so varied; it can't just be down to sheep and rabbits, there must have been significant interactions / involvement from man. A golf course is not a natural environment, it's a built environment. There's a bunker on the Old Course called "Shell," and Ian Andrew in his blog says the origin of the Road Hole bunker possibly was down to townsfolk digging shells there, and that was close to town. Was there a bunker already there? Ian implies there was, but what form did it take, and who / what started it?
It's in a collection area; could its evolution be down to repeated play, followed by townsfolk, followed by Allan Robertson?
Funny, but the more challenging the provenance the more interesting the story! Today it's just down to, "put a bunker there."
Wouldn't it be interesting to start with a patch of linksland today, cut a few holes, and see what developed?
Mark