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This is Scientific Americans' 60-second science. I'm Steve Merski.

With a full month of the regular season to play, the 2019 New York Yankees had set a major league baseball record for injuries.

That medical crisis led to what the online sports publication, The Athletic, reported on January 3rd, as, quote, sweeping changes, end quote, to their

training and strength and conditioning programs. When I read that news, I thought, of course,

of traffic cameras, which sometimes and reasonably get placed at sites that have a disproportionate

number of accidents in a given year. The fact that there's a higher rate of accidents will be partly due to chance because it will fluctuate over the course of time.

Sometimes it will be less. Sometimes it will be high. David J. Hand on the Scientific American Science

Talk podcast in 2014. He's a meritorist professor of mathematics and senior research

investigator at Imperial College London, where he

formerly held the chair in statistics. He was on the podcast to talk about the then new book,

The Improbability Principle, Why Coincidences, Miracles, and Rare Events happen every day.

So what does the Yankees revamped training staff potentially have in common with traffic cameras?

Now, if we look back at last year and identify the places which have particularly high rates of

accidents, those places, the high rate at those places will be used a sum of two things.

The natural degree of dangerousness of those places plus the fact that at that particular year just happens

to be a bad year. There was more accidents than normal at that year. But because it's a high rate of

accidents, we're now going to put a camera there. Again, a particular year just happens to be a bad year.

...