Always follow the Herring Convention
Richard Herring has come up with an excellent solution to the problem of ‘person in your way, what to do?’, and backed it up with impeccable Science and Logic. In short – go left, and slate anyone who doesn’t, and all will be mathematically fine.
Now, if Mr Herring can also solve the issue of corrievorrie, he’ll be elected a god amongst men. Relatedly – blimey, you can get the entire Meaning of Liff online. This is the best thing ever (except for sellers of books to keep in one’s toilet, who’ll presumably lose out slightly. And John Lloyd, but I’m fairly sure his invention of QI is keeping him fairly sorted in the lavatorial book market…)