I still recall a comment in my first economics lesson that there is no obvious limit to human wants. Lugubrious US comic Steve Wright provided a perfect retort: “You can’t have everything; where would you put it?” It is encouraging to see that more economists (Finally, a breakthrough alternative to growth economics – the doughnut, 12 April) are realising that a system which boils down to everyone making more money and buying more stuff will ultimately collapse in a heap.
Iain Climie
Whitchurch, Hampshire

• Those struggling with tying a secure knot in their laces (Report, 12 April) may welcome the arrival of helpful technology. I am pleased to report that “bubble laces” are now available in this country.  Rather like a miniature string of sausages, their construction does a great job of retaining the most inept attempts at a granny knot.
Peter Ferguson
Inverness

• Why are shoelaces so inordinately long?. This is particularly the case with trainers. I have great problems tying these successfully. I was gratified – a few years ago – to see Rafael Nadal, at Wimbledon, having similar difficulty tying his.
Bob Gough
Walton-on-Thames, Surrey

• When word processors were new and exciting, I inadvertently switched the auto-spellchecker facility on. For a few weeks after, and much to the receptionists’ hilarity, letters arrived back from colleagues addressed to Dr Banana.
Dr Colin Bannon
Crapstone, Devon

• Now there are hardly any high street banks open at all, is it time to rebrand these public holidays?
Barry Joyce
Wirksworth, Derbyshire

• In Thursday’s TV and radio guide, The Super Orgasm is followed by 24 Hours in A&E. Enough said.
Richard Burtle
Grimsby

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