Sir, – Fintan O’Toole should brush up his economics (“Getting rich by making things we don’t need”, Opinion, January 31st).
The purchasers of disposable electric toothbrushes are not daft as brushes – this niche-market product cleans up because it caters for forgetful (mostly long-in-the-tooth) customers, amongst whom your columnist may one day find himself. – Yours, etc,