I am in the [sic] for & conference.

Metrology is the science of measuring. Most (rich) countries have a metrological agency, which is responsible for maintaining measurement standards, they know how heavy 1 kg is and how long 1 meter. (Important for trade and science.)

It is a fun meeting, close to 100% about uncertainties. An enormous contrast to science in the media where uncertainties are mostly ignored and everyday science which is half uncertainties.

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The meeting reminded me of my personal favorite XKCD. xkcd.com/1985/

SECURITY!

The answer to the question in the alt text is: The weather at 12pm is defined as the average over the 10 minutes before 12pm.

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