Another, advocated by Robert Nozick, concedes that if both hemispheres are successfully transplanted, neither of the later individuals with just one brain hemisphere is identical with the earlier one with an intact brain, but insist that if only one hemisphere is transplanted, the resulting individual is identical with the former possessor of two hemispheres.
They will be a laughing stock in two hemispheres.
On top of the hill is the Royal Observatory, home to Greenwich Mean Time, where you can stand on the meridian line, the dividing point between Earth's east and west hemispheres.
The only surprise, perhaps, was that a player respected in two hemispheres for his crunching tackling – YouTube is not short of shuddering examples – never won a World Cup.
However what seems to have been lost in the political fray – sadly, in both hemispheres now – is the credo of a civil society that enshrines that seeking asylum is not illegal.
Of her honour, Meredith Hooper said: "We Australians in the UK inhabit two hemispheres.
To fabricate the actual pit, a hollow sphere of a suitable structural material, usually in the form of two half shells, is lined with precisely machined hollow hemispheres of plutonium.
In her view, the cross-talk between them in women, suggested by the wiring diagrams, helps explain their better memories, social adeptness and ability to multitask, all of which benefit from the hemispheres collaborating.
As the most famous commentator in the sport, he was the reassuring voice of summer in both northern and southern hemispheres.
One treatment for serious epilepsy is to cut the corpus callosum and the other nervous connections between the two hemispheres of the brain, which stops the fit passing from one hemisphere to the other.
He describes a patient whose moral reasoning has been disrupted by surgery to separate the hemispheres, who then judges that it is acceptable for a waitress to serve sesame seeds to someone she thinks is allergic to them, but who is not.
