World Philosophy Day happens later this week, which makes it a good time to be asking what constitutes good behaviour in a host and, equally, in a guest. I’m prompted by a recent article that took the rise in food allergies and intolerances as a starting point to ask how a host should act when faced with a guest whose professed allergies seem a tad suspect. Is it OK to ignore guest requests as snowflake signifiers? What should guests do when faced with intolerable food that they failed to inform their host about? In a perfect world, hosts and guests would accommodate one another’s needs; the world, however, is not perfect.

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