The Pencil on the String

No 10 claims to know something about the Brexit referendum that nobody can know. The Prime Minister says Russia tried to influence the vote but did not affect the outcome. The first half is a claim about conduct, which can be investigated. The second half is a claim about the inside of millions of minds. To make it, Downing Street would need to know what each voter would have decided in a world without the interference. That world does not exist, and no inquiry can visit it.

The opposing camp is no better placed. Those who insist Russia did swing the result claim the same impossible knowledge from the other side. Both assume that a referendum is a machine whose inputs can be weighed and whose output can be traced back to them. But a vote is an order that emerges from the interaction of many people. A retired fisherman in Grimsby reads something on his phone, argues with his daughter over Sunday lunch, half-remembers a leaflet, and decides. He could not tell you himself which of these moved him. He certainly could not tell a select committee.

There is a dry comedy in the position of the Kremlin here. It, too, commits the planner’s error. It imagines that a few thousand accounts and some well-placed content can steer an outcome produced by a whole nation’s private reasoning. That is central planning practised from abroad, and it suffers the same defect as central planning at home. The operator never knows whether the lever is connected to anything. The meddler and the reassurer face the same blindness from opposite ends.

The danger in No 10’s formulation is not that it is false. It may well be true. The danger is that it makes the legitimacy of the result depend on a factual claim about causation. Legitimacy is now hostage to whatever the next leaked report or academic study purports to show. If a future government decides the evidence points the other way, the same logic would require it to call the result illegitimate. Each new finding will invite a new official verdict on what the public “really” meant. This is the ratchet. Once the authorities begin certifying which influences counted, they have taken on the job of auditing opinion, and that job can never be finished.

The better ground is constitutional. A result is legitimate because the vote was conducted under general rules known in advance and applied equally. It does not need anyone to certify the purity of every voter’s motives. The proper response to foreign interference is therefore to strengthen those rules. That means disclosure of who pays for political advertising, prohibitions on foreign campaign funding, and penalties that apply whatever the outcome. Such rules do not require the state to know what moved the fisherman. They require only that everyone know the terms of the contest before it begins.

The fisherman’s decision ended in a booth with a pencil tied to a string. No minister should claim to know what he was thinking when he held it.