I was looking at that too... the trick that I see is that that's a statistical limit, not a "travel X miles, lose X% energy, no matter what" limit. It's still entirely possible for a particle to be over the limit, it's just highly unlikely.
We detect super-energetic particles frequently, but only a couple "over the limit". Seems to fit the statistical model to me.
We detect super-energetic particles frequently, but only a couple "over the limit". Seems to fit the statistical model to me.