That option is off the table and left-right polarisation has returned, at least temporarily.
After a year of political polarisation, the floods have created an unfamiliar feeling of national unity.
Still more worrying, the election result was evidence of enduring racial polarisation in South Africa.
For the time being, officials in China seem more concerned about the polarisation of wealth.
ECONOMIST: China's middle class: To get rich is glorious | The
But a traditional repeater destroys the quantum states of the photons, such as their planes of polarisation.
Polarisation will also lead to a vast number of takeovers, as the strongest firms fill the niches.
Channel 4's "superhumans" tag has just caused polarisation and too many Paralympians say they don't see themselves as disabled.
If Eve taps into the line and intercepts the key, she disturbs the photons when she measures their polarisation.
ECONOMIST: Secure cryptography is only as safe as its weakest link
These should have been imprinted on the fossil light in its polarisation.
He said improvements to the towers and the telecommunication links at all the towers would take place before dual-polarisation was installed.
No wonder Angela Merkel on Monday said she was worried about polarisation.
In places with gerrymandered districts, the outcome could even be more polarisation.
He calls for Congress to give more power to whichever party is in the minority, which is laudable but inconceivable in this age of political polarisation.
That is a result of increasing polarisation between the two big parties, which has led to blocked and unresponsive legislatures and so bred a yearning to circumvent them.
Political polarisation is part and parcel of the, as yet, unofficial election campaign - and not all of it is directed against the other side on the ethnic divide.
Quantum key distribution does this by encoding the information in the polarisation states of individual photons, the particles of light, which are sent from Alice to Bob over an optical fibre.
ECONOMIST: Secure cryptography is only as safe as its weakest link
The devices developed by the Georgia Tech researchers rely on a different physical phenomenon - tiny polarisation changes when so-called "piezoelectric" materials such as zinc oxide are moved or placed under strain.
In this case, however, the light is polarised in a different linear direction for each eye, so as to match the polarisation of the two side-by-side projectors used to show the film.
Andreas Schleicher, the OECD's special adviser on education, says a long-term characteristic of the UK's education system has been social division - with a polarisation between the results of rich and poor pupils.
He said the UK Met Office was planning to upgrade the radar again with dual-polarisation as part of a wider plan, with it due to happen in Jersey some time after the middle of 2015.
Commentators deplored the sharp fall in turnout in Britain in the 2001 election, but it is notable that one region - Northern Ireland - actually saw a rise in turnout, and with it increased polarisation.
But as David Autor, an economist at the Massachusetts Institute of Technology, points out in a new paper on labour market polarisation, fading union power has been more the effect than the cause of occupational shifts.
But, as if to demonstrate the extent of Sri Lanka's political and ethnic polarisation, Mr Rajapaksa's coalition won a massive victory in a provincial council poll held on the same day in Uva in the south-east.
Even Olympia Snowe, a moderate Republican senator from Maine who recently declared herself so disgusted with the polarisation of Congress that she is not running for re-election this year, has been inching to the right since 2010.
As for the polarisation of the parties, Mr Norquist argues that there is no compromise to be found between a party that wants to go one way and another that wants to go precisely the opposite way.
The team argues that switching the voltage applied to these electrodes in a particular way should create a pattern of polarisation in the rod which moves superluminally, just like the charge distribution in the plasma surrounding a pulsar.
But today polarisation is almost instant, thanks in part to the growing role of non-negotiable issues such as abortion in American politics, in part to the rise of a media industry based on outrage, and in part to a cycle of tit-for-tat demonisation.
Many are worried by the seeming polarisation between the Brotherhood, which professes a reformist agenda but has never been tested, and a government that is just beginning to produce some economic progress, but has, largely by its own folly, badly damaged its political legitimacy.
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