Well first I would say, &quot;7 centuries?  It&#x27;s only 572 years!&quot;  Then I would point out that it&#x27;s actually only 332 years since a chunk of 240 years of the Japanese freeze data (ending at 1922-23) are considered invalid and therefore not used in the analysis.  Then you can just fall back on not denying climate change but denying the man-made aspect of it, or pointing out what a tiny sample this is in relation to human existence.