Crowdsourcing the unemployment rate

What's inflation going to be? Wanna bet?

"Wisdom of the crowds" is a pretty solid phenomenon. Ask a thousand people to guess the number of sweets in a jar, and the average (mean) of their guesses tends to be damn close to the actual number.

What's more interesting is whether the same idea works, not just to guesses, but to forecasts. Specifically, economic forecasts. If you ask a thousand people to guess what the unemployment rate will be in two years time, how will they do?

There are certainly reasons to be hopeful. Information is widely distributed, with little advantage accruing to experts; and in fact, unlike with simply counting sweets, there's likely to be a fair few people with "inside" information (hiring plans, perhaps, or a feel for how their sector is moving), which they may use to inform their guesses. Mix together enough guesses, and you could generate insight.

That's what the Adam Smith Institute and Paddy Power are hoping; the two have teamed up to offer markets in key UK economic statistics. You'll be able to bet on what the rate of inflation and unemployment will be in June 2015; the ASI's Sam Bowman writes that:

By combining the local knowledge of thousands of people, betting markets can outpredict any panel of experts. If these markets catch on, the government should consider outsourcing all of its forecasts to prediction markets instead of expert forecasters.

But there may still be some problems, both with the idea and its implementation.

Betting markets are indeed a theoretically great way of harnessing the wisdom of the crowds. As Bowman writes, the fact that people put money on their predictions means that more confident predictions are weighted higher, and vice versa. But the necessity of teaming up with a bookmaker to launch the idea means that there is a major distortion: the odds the bookie has set. Punters can get 7/2 that inflation will be greater than 5 per cent, and just 5/2 that it will be between 4.01 per cent and 5 per cent. That means that someone who thinks that inflation is most likely to be around 4.75 per cent may take advantage of the higher odds offered if they guess slightly higher. It also means that what Paddy Power think is most likely will skew the guesses.

A better version of the same idea would be to create a prediction market. The difference between the two is that in a market, the crowd takes the role of bookmaker as well as punter. The odds themselves get set procedurally, based purely on where people are betting, and so there's no chance of a bad guess on the bookies' part skewing the predictions.

But even if the market was designed to perfectly get the true thoughts of everyone in the crowd, there's still reasons to doubt that it can be that good at forecasting economic data.

There's quite a specific set of conditions which are required for crowdsourcing to work. James Surowiecki, who coined the phrase "wisdom of crowds", describes four: Diversity of opinion, independence of opinion, decentralisation of action, and aggregation of information. Of those, the one which is the most problematic in this case is independence. People's guesses aren't secret, and they affect others. That means you could end up seeing a circular mill, where everyone reinforces everyone else's beliefs to the extent that the crowdsourcing breaks down. Think: do you hold your beliefs about what might happen to the unemployment rate based on investigation of the primary data, or based on collation of expert analysis? If it's the latter, you'd be a net harm to the crowdsourcing, contributing largely to the flocking problem.

It would still be nice to get more financial bets. But that's mostly so that I could join in my sportier friends in having something where I feel like my expertise could win me a bit of cash; when it comes to actually trying to work out what will happen, we might have to stick with older methods.

Mark Carney. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Donald Trump brings home his dark vision of America at the Republican convention

The Presidential nominee pledged: "Safety must be restored."

Donald Trump brought home the Republican convention Thursday night with a dark vision of contemporary America – a darkness he claimed only his leadership could lift. It was a lengthy, tightly-scripted speech framed around polarities – insiders and outsiders, criminals and victims, the United States and the rest of the world – and infused with righteous anger. And yet against the darkness, he offered not lightness but “greatness” – a bombastic, personalistic vision of how through sheer force of will he could right the American ship before it plunged irretrievably into the depths. “I alone can solve,” he famously tweeted earlier in the campaign. This was the 80-minute version.

Any presidential challenger, of course, has to lay out a set of problems they believe need fixing and a case for why their leadership might make a difference. It was the breathtaking scale and intensity of Trump’s diagnosis, and the lack of optimistic alternative to counterbalance it, that was notable compared to other acceptance speeches. He portrayed the United States as a country riddled with crime and corruption, a “rigged system” in which politicians like Hillary Clinton can evade justice, while police officers trying to protect its citizens become targets; a fearful country, its economy sluggish, its infrastructure crumbling, its security an illusion, and its international stature in freefall

For a candidate who has mocked the soaring rhetoric of President Obama (the “hopey-changey stuff,” as Sarah Palin once called it), it was perhaps not surprising that Trump’s speech would be short on uplift. It was at least more disciplined than his other campaign speeches, if in keeping with their tone and content – the much-maligned teleprompter rolling a script to which he largely stuck. (“He sounds presidential,” a lady behind me remarked, though his press conference Friday morning marked a reversion to free-wheeling form).

It was short on substance too, though acceptance speeches aren’t designed to be policy laundry lists like a State of the Union. Still, there were few specifics, beyond a pledge to revise tax laws which inhibit religious groups from political advocacy, and a newfound concern with student loans. It was daughter Ivanka’s speech that had the greater substantive heft, promising her father would push for new labour laws to help working mothers, and for affordable childcare in the US. Neither are traditional Republican positions, but the crowd seemed on board for anything Trump might offer.

He even had them cheering for LGBTQ rights, after recalling the tragedy in Florida last month, and the need to protect gay Americans from a “hateful foreign ideology” in radical Islam. “It is so nice as a Republican to hear you cheering for what I just said,” he commended the delegates in an unscripted moment. But whether they had really embraced this unexpected message – or if it was the anti-terror chaser that really got them on their feet – remains to be seen. In either case, it was a rare grace note in an otherwise bruising speech.

Presenting himself repeatedly as the candidate of “law and order,” Trump evoked Richard Nixon’s 1968 presidential campaign. At a time when American cities were erupting in race riots and protests over the Vietnam War, Nixon had pitched himself as the face of stability and security. Likewise Trump has reacted to the simmering racial tensions and terrorist attacks this summer with a hard-line stance on “lawlessness.” “Safety must be restored,” Trump said, in one of the eerier lines he delivered. Yet in his convention speech, Nixon had balanced his tough talk with a positive message – speaking of love, courage, and lighting a “lamp of hope” in partnership with the American people. 

Trump channeled another president in his speech, too, when he promised to give voice to “the forgotten men and women of our country” – drawing on the language of Franklin Roosevelt. Roosevelt had promised to aid “the forgotten man at the bottom of the economic pyramid” during the 1932 campaign. But Roosevelt’s solution to the forgotten man’s distress was economic internationalism – tearing down tariff walls and trading freely with the world – which the Republican Party then opposed. Trump’s solution is the protectionist policies Roosevelt had railed against.

Trump’s economic and security philosophy is encapsulated in another, more notorious phrase associated with that era: “America First.” A rallying cry for isolationists seeking to avoid US entanglement in World War II, it acquired an anti-Semitic taint. But Trump has employed it nonetheless, capturing as it does his core argument that America must do more to protect its own citizens against threats from within and without – from illegal immigrants, from radicalized Islamic terrorists, from the downsides of free international trade. Little wonder that former George W.

Bush staffer Nicolle Wallace announced that the Republican party she knew “died in this room tonight.” In embracing elements of isolationism, protectionism, and nativism, however, it is perhaps truer to say that Trump’s Republican party reverted to an earlier form.

Often disconcerting, at times mesmerizing, the question remains how effective this speech will be. The delegates responded enthusiastically to Trump’s fierce rhetoric, but many prominent Republicans had stayed away from the convention altogether. Combined with Senator Ted Cruz’s non-endorsement, Trump goes into the general election campaign without a fully united party behind him. For both partisans and the public, Trump’s speech offered a cast of villains to rally against, but no positive, unifying vision to rally behind – beyond the much-touted yet elusive “greatness,” of course. In a typical election year, that would seem a critical flaw in a campaign – but Trump loves to confound the naysayers. As his convention speech showed, he thinks the formula that got him this far - showcasing his fame and fanning Americans’ fears – can land him in the White House.