Socialism is popular in Britain. More popular than capitalism, at any  rate. That was the result of a YouGov survey last year, in which 36% of  respondents expressed a favourable view of socialism, while only 32%  expressed an unfavourable one. Capitalism, meanwhile, is viewed  unfavourably by 39% of respondents, while only 33% view it favourably.
Yes, I know: It all depends on how you frame the question. But 
“Do you have a favourable or unfavourable opinion of socialism and capitalism?”  does not strike me as a manipulative way of framing it. Besides, if  more than a third of the population expressed a favourable view of, say,  the flu virus, we would question their sense of judgement, regardless  of how exactly the question is worded.
So what explains the enduring appeal of socialism? Part of the story is  that socialism’s proponents have always been very effective at  distancing themselves from real-world examples whenever they have ended  in tears (as they invariably do). ‘North Korea, Cuba, Venezuela? The  Soviet Union, Mao’s China, the Khmer Rouge? Nothing to do with me, mate:  That wasn’t 
real socialism. 
Real socialism has never been tried.’
This would not work the other way round. When confronted with (actual or  imaginary) downsides of the market economy, its supporters would never  get away with a response like ‘That wasn’t 
real capitalism. 
Real capitalism has never been tried’.
But what, then, is the difference between real and ‘unreal’ socialism?  What is it about, say, North Korea’s socialism that puts it into the  ‘unreal’ category, and what would the North Korean government have to do  in order to earn that elusive Real Socialism blue tick verification  mark (which, remember, has never been awarded)?
When pushed, socialists usually struggle to give an answer. This is  because most of the time, the not-real-socialism meme is a post-hoc  rationalisation. Every socialist experiment has, at some point, been  waxed lyrical about by Western intellectuals, including 
Stalin’s Soviet Union  and Mao’s China. It was only when their horrors could no longer be  denied even with the best will in the world that the blue tick was  withdrawn retroactively.
And yet, there are exceptions to this, such as the 
Socialist Party of Great Britain (SPGB).  They are not, and as far as I know, never were, apologists of  Soviet-style socialism, which they describe as ‘state capitalism’. They  are among the few socialists who have at least some idea of what they  mean by ‘real’ socialism. They use that term to describe a hypothetical  system in which working-class people own and control the economy’s  productive resources directly, not via the state; a system in which  public ownership is not mediated through a government bureaucracy.
I have no idea how this should work in practice, but I suppose we could  imagine some combination of public ownership with Swiss-style  multi-level direct democracy. Even then, though, at least one massive  problem remains:
You can define an economic system by its institutional characteristics  (e.g. public ownership), and perhaps by its aspiration (e.g. widespread  prosperity, giving ordinary workers control over economic decisions).  But you cannot sensibly define a system by the extent to which it is  successful in meeting those aspirations. Whether a system actually  achieves what its proponents want it to achieve is a question which must  be testable and falsifiable. Otherwise, I could define a capitalist  economy as ‘an economy based on individual property rights and voluntary  exchange, in which everybody is fabulously rich’. Whenever an actual  economy that 
is based on individual property rights and  voluntary exchange then fails to make everybody fabulously rich, I could  proclaim that that economy is not ‘really’ capitalist. Real capitalism  has never been tried. And 
No True Scotsman would do such a thing.
‘Empowering the workers’ is an aspiration, 
not an institutional  design feature of a system. More, it is an extraordinarily lofty  aspiration, and so far, nobody has worked out how to do it. Politicians  of all parties constantly talk about ‘empowering ordinary people’. Every  NHS reform is supposed to be somehow about ‘empowering patients’, every  educational reform about ‘empowering parents’, every electoral reform  about ‘empowering voters’. We are 
surrounded by people who  promise to ‘empower’ us in one way or another, and yet somehow, most of  us don’t feel all that ‘empowered’. The EU referendum was supposed to be  ‘empowering’, and look at where that got us. Plenty of Remainers now  feel that an illegitimate result (‘won on the basis of lies;  unscrupulous populists duping low-information voters’) is being forced  upon them. Plenty of Leavers now feel that sneering elites are secretly  plotting to overturn their decision (‘ENEMIES OF THE PEOPLE!’). The  ‘true’ socialists’ claim that their system is one which ‘empowers the  workers’ is not that special. Everybody claims that. And nobody is  particularly good at it.
But never mind. What would a combination of socialism with direct  democracy look like? Let’s put it that way: the homeland of direct  democracy, Switzerland, is already experiencing something of a  referendum inflation, even with the current, relatively limited scope of  the sphere of collective decision-making. Last year, a resident of the  Canton of Zurich could have voted in 13 referenda at the federal level, 8  at the cantonal level, and God knows how many at the municipal level.  It works, though. Voter turnout at Swiss referenda rarely falls below  40%.
Now let’s imagine that Switzerland turned socialist, and expanded its  model of direct democracy to the newly socialised sectors. This would  mean referenda on the production of razors, carpets, gloves, ink  cartridges, curtains, hair straighteners, kettles, toasters, microwaves,  baking trays, washing-up liquid, tiles, hand blenders, pizzas, and  many, many other things. You would need literally thousands of referenda  to organise an economy in this way.
And that is the real reason why ‘real socialism’ has never been tried:  even if it could be done logistically (which I doubt), it would be an  absolute pain in the neck. Voter turnout would soon drop to rock-bottom  levels. The economic planning process would become dominated by vocal  single-issue groups, not ‘ordinary workers’. Eventually, all the heavy  lifting would have to be delegated to expert committees. 
At that point, ‘real’ socialism would become ‘unreal’ again.
But such efficiency arguments aside, ‘real socialism’ would also be a  recipe for permanent social conflict and resentment. Are you a  ‘Remoaner’, still bitter about not getting your way in the EU  referendum? Wait until beer production is socialised, and you find  yourself on the losing side of a referendum about discontinuing the  brewing of your favourite beer brand.