That's not really a retort, unless the question in the comments is different than my comment.

11,000 years of data doesn't give you any meaningful data unless you can show that this _never_ happened in the past. 40 years is the amount of data for that.

There's no good evidence to suggest that 1/40 of it not happening is an abberation. It could be 1/100 of those 11,000 years this happened and there'd be no way to know.

If it continues to happen, we'll have something. For now nobody should be "alarmed".