25th of July 2018 - Is There A Convenient Answer?

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25th of July 2018

Dear Sir/Madam,

IS THERE A CONVENIENT ANSWER?

Whilst your readers seem unlikely to agree on Brexit, I wonder if they can achieve a consensus on the burning question of our times:

Why do modern on-train toilets require the operation of two buttons to close and lock the door but only one to unlock and open it?

John Eoin Douglas