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Once you eliminate the impossible, what’s left? A second referendum

The Channel 4 debate last night showed how the alternatives are crumbling

By Peter Kellner  

Jacob Rees-Mogg and Caroline Lucas took part in Channel 4's Brexit debate on Sunday. Photo: Victoria Jones/PA Wire/PA Images

Sherlock Holmes would have understood. In The Sign of Four, he famously told Dr Watson: “When you have eliminated the impossible, whatever remains, however improbable, must be the truth.”

The Brexit saga is not a murder mystery, but Holmes’s logic remains: if MPs reject Theresa May’s withdrawal agreement decisively, all the options for leaving the European Union on 29thMarch will be impossible—politically, if not theoretically. The only sane option that will…

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