I've lived a ridiculously fortunate life, so I knew it was only a matter of time before something was going to knock things a bit off course; I just didn't think it'd happen like this.

Scientists would like to prevent something like that from happening in the future, but it would take time to figure out how to best knock an incoming asteroid off its collision course.

A salesperson will be more motivated to knock off extra dollars on an item that has been on the sales floor for two seasons compared to something that has just arrived.