It's how people count. If they always go in threes then what were the other 2 when Andreas Katsulas died two weeks ago? People who think things happen in 3s always notice clusters that match their pre-conception, or manufacture them by forming clusters, and ignore the ones that go against.
You missed my point. At the cemetary he worked with the people died in 3s. NOT two weeks apart! And to have three folks die who all needed to be buried in the same small cemetary is even more strang. It happened in days not weeks. Then there would be a break and then another batch of 3. I'm not saying it happened every time but it was frequent enough that there was a pattern. And it is down right strange.