Stop walking to the left.

Sidewalks, stairways, always, please . . . stay to the right when you’re walking through New York City. It’s such a basic idea, underscored by all our two-way streets and large stairwells separated by bannisters. Yet there you all are, plunging up and down the left-hand staircase or left side of the sidewalk against the tide of pedestrians dutifully trying to stay to the right. Just as many locals as tourists do this, so don’t point fingers. Just veer right. And pay it forward and yell at three people coming toward you to do the same.