In both children and adults, there can be a hard-to-deny link between a robust sense of hope and either work productivity or academic achievement.

A child gets vaccinated and soon after, autism symptoms emerge. The apparent cause-and-effect is understandable but erroneous - more a coincidence of the calendar and childhood developmental stages than anything else, as repeated and exhaustive studies have shown.

Older siblings get more total-immersion mentoring with their parents before younger siblings come along. As a result, they get an IQ and linguistic advantage because they are the exclusive focus of their parents' attention.

Members of royal families are born into a world of indulgence and entitlement, and the princelings who grow up that way may never have to develop the emotional musculature that will allow them to show self-restraint.

If we were a culture of high-risk alcoholics, and suddenly we had Jack Daniels piped into our houses, we would be feeding that fire. Social networking, and the internet as a whole, seems to have simply landed in an extremely fertile place in an extremely fertile time in history, when we all have these narcissistic tendencies anyway - you can go further back into the self-esteem movement, and Dr. Spock, and the 'everybody gets a ribbon at the track meet' sort of thing, which preceded the internet - and then you drop the internet into the middle of this, and we've all gone haywire.

Operating-room errors hold a special terror for patients, if only because they seem like the most avoidable kind of complications. The occasional horror stories of patients who have the wrong leg removed or the wrong knee replaced generate the most headlines, as do tales of patients whose identities are mixed up entirely.

There may be no more-radioactive term in the English language than what we now almost always refer to as the 'n-word' - itself a coy means of linguistic sidestepping that is a sign of how perilous it is to utter the thing in full, even in conversations about language.