Yes, Elizabeth Taylor, Norman Mailer, Warren Beatty, David Rockefeller, and Mick Jagger will go to a nightclub, but only if they are reasonably certain that Diana Ross, William F. Buckley Jr., Salvador Dali, Betty Ford, Frank Sinatra, Mikhail Baryshnikov, and the king of Cyprus will show up too--and vice versa.
Mick Jagger will go to a nightclub and stay for hours if he can be reasonably certain that certain others are going to be there.