Why do people no longer walk up or down on escalators?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific conceptsWhy do people no longer (with the exception of those using the London Underground) walk up or down on escalators? Not only that, they do not stand to one side to allow those who are not on the things for a leisurely ride to get past them.Mike Drew Continue reading...