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We have been blessed with unusually good weather last several days. So my husband and I have played golf 3 times already after coming back from Japan. (3 times may not sound much but for us it’s fairly frequent.) When we arrived at the golf course this afternoon, a great many adult golfers were already out playing. Since we are not competitive, tending to enjoy a slower pace, we let a few players move ahead. (These players moved really fast.) A break in the stream of players after a surge created a tranquil atmosphere on the golf course, revealing its beauty: the shadows of fir trees projected interesting patterns on the green rolling hills; the birds were singing. It was serene and peaceful to play golf in a relaxed manner.

Around 4pm the golf course suddenly became lively and crowded. It was as if the entire golf course was invaded by young people, most of whom appeared to be either the local high-school or college students. Their movements were quite free, cutting across one fairway onto the next fairway on different hole, for instance; they somewhat reminded me of the random movement of subatomic particles, which, according to Heisenberg, was uncertain. We found it enjoyable to see young people on the golf course as they enjoyed playing golf on a sunny day like today.

“The more precisely the position is determined, the less precisely the momentum is known in this instant, and vice versa.” 
– Heisenberg, uncertainty paper, 1927