In this tenth annual edition of Telegraph readers’ letters, Alexa and gender-neutral lavatories join the perennial concerns with good English, cricket and the march of time. Hollingshead, as the departing editor, pays tribute to the letter-writers’ ‘wit, erudition and occasional downright lunacy’ and adds a best of the last decade chapter, including the priceless ‘Sir, It has all been a terrible mistake. We thought we were voting to leave Eurovision’. Slightly off-mint.