A Disquisition on Macrocephaly

When Klaus was born, his mother looked at him lovingly and exclaimed, What a big head you have. It was undeniably true, everyone else in the hospital and the family said so, none of them so lovingly as his mother of course, but in any case it was no cause for alarm, everyone knows that babies' heads are disproportionately large for their tiny bodies, and that this discrepancy is remedied by the inexorable passage of time.

By age four, however, the problem, if it can be called such, was still very...