Concentration you could cut with a knife by the first tee of the Old Course. This is the golfing holy of holies. Eight earnest American gentlemen all practising their putts in front of the R&A. They've started their day early. Not even the caddies have shown up yet. In quarter of an hour there will be a tannoy announcement and the first four will be teeing off. A group of tall college kids from Arkansas congregate and watch them. The college kids seem to think this is all 'awesome'. The youngsters are part of a volleyball team and have spent the night at a rave on the beach. They are drinking beer from cans. One of them opens a new can which jets all over his face and on the ground. This sacrilegious behaviour attracts glares from two of the putters. I'll put money on the fact that the late to bed ravers inhabit a world that has little in common with that of the early rising golfers.
Sunday morning reading :https://blog.samaltman.com/the-days-are-long-but-the-decades-are-short