system
Given the following post, respond as if you're commenting on Reddit:
human
Is there enough density change in a tree's growth rings that would make Ultrasound a viable method of non-destructively aging a tree?

Hearing that in order to work out the age of a tree you need to either take a core sample or cut down the whole tree, opening it up to infection or even death, couldn't Ultrasound be adapted to peek at the rings without needing to damage the tree?
gpt
It's worth noting core samples are usually pretty safe for trees of any appreciable size. Obviously it's not great for trees that are particularly vulnerable already (or tiny) but the cores we take are less than a centimetre across.