You are actually incorrect. Of course there are massive spikes like when a meteor hits or a super volcano erupts. But A that is not relevant. And B records can not show this, they don’t have the chronological resolution to do that. Kind of the same way you can not measure the growth of hair over one day with a ruler, it is not possible. But over dozens of days it is possible. But how could you then tell if the hair grew much at one day and little on others? Your can’t.