Time 10 warning math included (but it's not that bad)

So now we get to deal with the classic sci-fi topic of causality. Now let’s pick two events and since we are dealing with sci-fi and I recently watched the movie I pick wolverine and deadpool causing the meltdown of the three-mile island reactor. Ok, I know that didn’t really happen but let’s say it did. So we have two distinct events wolverine fighting deadpool (we’ll say the instant that they start fighting) and the reactor meltdown (we’ll say they instant that the people monitoring it call the military). Now these two events are separated by a time-like interval. Because we know this and that one event causes the other, we know the above equation applies. What it says is that the square of the spatial distance between the events must be less than the speed of light multiplied by the time between the two events. The second equation therefore says that the spacetime interval (or ‘distance) between the two events must be greater than zero. All this says if that if the instant wolverine took a step forward to fight deadpool a light sensitive trigger went off, tripping, by electrical signal the phone that was to call the military it would take at least as much time as a beam of light to be shot from the warehouse opening to the phone. I know it really doesn’t tell you anything important does it. Well I suppose the most important thing is that wolverine won.