The day Watson the super computer learned to swear

Could this actually be a breakthrough?

IBM has been trying to get a super computer (Watson) to pass the Turing test - a test that works out how intelligent - or human like - a machine is.

But when they tried to teach Watson some phrases from Urban Dictionary, they accidentally taught him how to swear. Then they couldn't get him to stop. Here's an extract from an interview with Ed Brown, that appeared in Fortune magazine.

But Watson couldn't distinguish between polite language and profanity -- which the Urban Dictionary is full of. Watson picked up some bad habits from reading Wikipedia as well. In tests it even used the word "bullshit" in an answer to a researcher's query.

Ultimately, Brown's 35-person team developed a filter to keep Watson from swearing and scraped the Urban Dictionary from its memory. But the trial proves just how thorny it will be to get artificial intelligence to communicate naturally. Brown is now training Watson as a diagnostic tool for hospitals. No knowledge of OMG required.

It sounds like they made a breakthrough. The Turing test supposedly tests artificial intelligence - but this is a misnomer, as it actually measures for all human behaviours, not  just "intelligent" ones. Points are given for idiosyncratic behaviour: susceptibility to insults, temptation to lie, and even typing errors - (the first Loebner winner's victory was due partly to its ability to "imitate human typing errors").

Picking up swearing a little too easily? Responding to a supposedly straight question with "bullshit"? Sounds like Watson's becoming more human by the minute.

A computer that swears back. Photograph: Getty Images
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The Brexiteers' response to John Major shows their dangerous complacency

Leave's leaders are determined to pretend that there are no risks to their approach.

Christmas is some way off, but Theresa May could be forgiven for feeling like Ebenezer Scrooge. Another Ghost of Prime Ministers Past in the shape of John Major is back in the headlines with a major speech on Brexit.

He struck most of the same notes that Tony Blair did in his speech a fortnight ago. Brexit is a blunder, a "historic mistake" in Major's view. The union between England and Scotland is under threat as is the peace in Northern Ireland. It's not unpatriotic for the defeated side in an electoral contest to continue to hold to those beliefs after a loss. And our present trajectory is a hard Brexit that will leave many of us poorer and wreck the British social model.

But, as with Blair, he rules out any question that the referendum outcome should not be honoured, though, unlike Blair, he has yet to firmly state that pro-Europeans should continue to advocate for a return to the EU if we change our minds. He had a note of warning for the PM: that the Brexit talks need "a little more charm and a lot less cheap rhetoric" and that the expectations she is setting are "unreal and over-optimistic".

On that last point in particular, he makes a point that many politicians make privately but few have aired in public. It may be that we will, as Theresa May says, have the best Brexit. France may in fact pay for it. But what if they don't? What if we get a good deal but immigration doesn't fall? Who'll be blamed for that? Certainly we are less likely to get a good deal while the government passes up pain-free opportunities to secure goodwill from our European partners.

As with Blair, the reaction says more about British politics after Brexit than the speech itself. Jacob Rees-Mogg described it as "a craven and defeated speech of a bitter man". Iain Duncan Smith, too, thinks that it was "strangely bitter".

There is much to worry about as Britain leaves the European Union but the most corrosive and dangerous trend of all is that section of the Leave elite which requires not only that we implement Brexit but that we all pretend that there are no risks, no doubts and that none of us voted to Remain on 23 June. That Blair and Major's speeches - "You voted for it, so we'll do it, but it's a mistake" - are seen as brave and controversial rather than banal and commonplace statements of political practice in a democracy are more worrying than anything that might happen to the value of the pound.

Stephen Bush is special correspondent at the New Statesman. His daily briefing, Morning Call, provides a quick and essential guide to British politics.