Your article (Microsoft unveils chip it says could bring quantum computing within years, 19 February) said that this new class of computers, unlike current machines, will be “based on quantum mechanics rather than classical physics”. While the Babbage machines might be described as using classical physics, I firmly believe there are elements of quantum physics involved in the tablet on which I am writing this.
Prof Stephen Holloway
Liverpool
• Even better than Clare Finney’s suggestions (‘The classiest gift I’ve heard of’: what to bring to a dinner party (that isn’t wine or chocolates), 19 February), I think, is to arrange for flowers to be delivered two days earlier so the host has time to arrange them before the day of the dinner party. Arriving with a bunch clutched in your hot little hand and giving the host yet another task is not classy at all.
Heather Parry
Watford, Hertfordshire
