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The Fibonacci sequence as a cure for insomnia | Life and style | The Guardian

Your article “Netherlands and UK ‘top choices for tax havens’” (26 July) is misleading at best. If you look at the biggest tax havens in the researchers’ list British Virgin Islands admittedly comes top but, at the heart of the EU and nurtured by Jean-Claude Juncker himself, Luxembourg comes second. Not an offshore island able to set its own tax rules, but a fully fledged EU country. Britain is not even on the list of destinations, and we citizens certainly do not benefit from such shenanigans. Where is the outcry about the EU’s role in this? Nicky Lawson Long Melford, Suffolk

If Justin Gatlin has served the bans imposed for doping offences some years ago, why exactly were so many in the London crowd booing him for beating Usain Bolt in the world championship 100m final (Report, 7 August)? Would they apply the same principle to former prisoners – ie you’ve served the time for your crime but remain forever damned for it? Anyone heard of rehabilitation? Norman Miller Brighton Alcohol Insomnia

The Fibonacci sequence as a cure for insomnia   | Life and style | The Guardian

No, John Lewis (Trills and thrills as Proms tips its hat to jazz royalty, 7 August). James Morrison hasn’t got “a tank of air hidden under his suit” or anywhere else as it happens. He’s Australian and uses the didgeridoo player’s technique of circular breathing. Amazing nevertheless. Keith Walker Northallerton, North Yorkshire

Thank you, Malcom Myles-Hook (Letters, 4 August). You’ve given me another anti-insomnia tactic (besides counting backwards in sevens and listing fruit and veg alphabetically). I can calculate the Fibonacci sequence and the miles/kilometres conversion. Works a treat. Marion Hutt Seaford, East Sussex

Please stop all these letters about ejaculation (Letters, passim) before someone suggests we’ve discovered another use for 35mm film canisters. Robert Philip Edinburgh

Hooray! The codeword clues are back to two letters (7 August), so here’s two from me: Ta! Ellie Sedgwick Westhall, Suffolk

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The Fibonacci sequence as a cure for insomnia   | Life and style | The Guardian

Insomnia Disorder Read more Guardian letters – click here to visit gu.com/letters