People ages 40 to 65 with a type of early-onset dementia are less likely to be able to name — or even recognize — very famous folks such as Princess Di, Oprah Winfrey, John F. Kennedy, Lucille ...

11 Famous People You Didn’t Know Go to Burning Man (No. 5 Might Surprise You) ... but on playa my first instinct was that I quite obviously needed to introduce myself and start with hugs. ...

A version of this article appears in print on , Section A, Page 23 of the New York edition with the headline: Famous People Don’t Know How to Say ‘I’m Sorry ...