Hello, I was wondering why "did" is used in the following sentence: Well, as any philosopher can tell you, one good reason for skepticism is that you can't make assumptions about causes. (omitted) For instance, if I do a rain dance at 5 P.M. and it rains at 6 P.M., did my dance bring down the rains? Probably not. But it's that kind of thinking, in my view, that characterizes much of the argument about how television influences our values. Thanks in advance for help.