The sequence of events has given rise to news articles and blogs based on 20/20 hindsight, speculating that if only Mr. Jobs had had the surgery right away, doctors could have caught the cancer early, before it spread, and saved him.

But there is no way in this life to know what might have been — not in politics, baseball, romance or the stock market, and certainly not in sickness and health. Mr. Jobs’s wish to avoid or delay surgery was not unusual. And given the type of tumor he had and the way it was found, his decision to wait may not have been as ill considered as it seems at first blush.