So,you know,there's a man,I use his example in the book,Akira Haraguchi, a retired engineer from Japan who at the age of 69,he's the guy who memorized over 100,000 digits of pi,right?

所以，你知道，有一个人，我在书中用他的例子， 来自日本的退休工程师 Akira Haraguchi，69 岁，他是那个记住了超过 100,000 位圆周率的人， 对吧？