This leaves me with a puzzle. Why are tapeworms, which presumably jazz up type 2 helper T-cells, also considered to be effective against some allergies?
The editor writes:
• Parasitic worms secrete chemicals that damp down our type 2 immune response in order to promote their own survival. This has the benefit for their human hosts of reducing allergic reactions.
The creation of a new form of intelligence that humans can't understand (10 August, p 32) might herald the appearance of "zombies"?– intelligent entities that can do everything a human can but which are not conscious.
The prospect of witnessing them discussing consciousness and giving every appearance of knowing what they are talking about is intriguing.
Safety in numbers
The best defence against being tagged with nanocrystals sprayed by drones controlled by border guards, police or the army (24 August, p 19) would surely be to hide in a crowd. If that fails and you become the only person tagged, thwart the system by coating lots of other people and vehicles with the spray, assuming you could get hold of it.
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