Vicky Allan’s article rightly opens the door on tomorrow’s flexi-house (welcome to the home of the future, Technology, July 2). Slowing our rate of adaptation for the moment is commercial inertia coupled to vested interest. However, forward-thinking multi-nationals are gearing up, be it in solar radiation management, genetic engineering or mass forms of food production. As a retired farmer, I see today’s cattle 30 years hence being conservation tools, not beef producers, and so on. Rapid change raises the question: an an opiate addicted world of virtual reality, how will our present species face the prospect of control by robotic intelligence, a hybrid robo-human?

Iain R Thomson

Cannich

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John F Robbins, Secretary Save Our Seals Fund, writes that Government ministers have gone overboard on the use of the word “sustainable” to describe salmon farming (Salmon farming is not sustainable, Letters, July 9).

He writes about the use of fishmeal to feed farmed salmon. In fact, use of fishmeal, which emulates the salmon’s natural food, has been slashed in order to appease environmentalists. There is no definitive proof that sea lice from salmon farms kills wild salmon and sea trout.

Dr MR Jaffa

Callander McDowell, Manchester