Spare a thought for the poets. When your favourite band records their latest 12 track album, there are 479,001,600 ways they can arrange the songs on the album. When a poet writes an average-sized book of 70 poems, there are 11,978,571,669,969,891,796,072,783,721,689,098,736,458,938,142,546,425,857,555,362,864,628,009,582,789,845,319,680,000,000,000,000,000 ways they can arrange the poems. And, even if they arrange them well, it’ll be something that’s scarcely noticed. Every book of poems I’ve had a hand in editing has gone through a tried and tested process. The poems are printed, then laid out on a large floor for painstaking arrangement and rearrangement. It’s an arcane task that’s part intuition, and part logic. Its aim is to find a compelling order and a natural balance for the poems’ themes, images, vocabulary, etcetera. But, anyway, that’s the maths.