As a macroeconomist, I was taught to find truth and insight in numbers. I no longer buy that. In studying the Bible, I discovered that the source of true wisdom lies in its stories of ordinary people confronting extraordinary challenges. But habits die hard.

My wife and I are blessed with 18 grandchildren. To write a column on the enormous changes that have occurred in grandparenting, I retrogressed to digging up data – but in what follows, I pay penitence with some illustrative personal stories.

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