Solace for friendless actuaries

If your social circle is small, it’s safe. Via stats.org:

A new study published in the journal PLoS One has found that those who have a wider social network may catch the flu sooner than others.

I’m more intrigued by the idea, later in the post, about the friendship paradox. If you ask a bunch of people to name a friend, that friend probably has more friends than the person you are talking to.

Friends of circles

This is mathematically inevitable. There’s an elaborate explanation of why this is so here, but I think the diagram at right keeps things simple but still does the job.

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