The Almanac of Collapsing Records

The Book That Explained the Sky — London, 1687

A printing house off St Paul's Churchyard, London

July 5, 1687 — the day the Principia is finished at the press: the book that showed one law holds the apple to the ground and the moon to the sky, printed in a cramped London shop an astronomer paid for out of his own pocket

The sky came off a hand press in a cramped London shop. This breach reads the PRINTER'S APPRENTICE on the morning the Principia is finished: wet sheets hung like laundry, type set letter by letter by men who cannot read the Latin they are setting, and on one proof a small diagram — a cannonball thrown from a mountaintop so hard it never lands, but falls around the world forever. The witness is read only in the shop: the ink on the hands, the astronomer in the doorway who paid for it all, the page where the moon and the apple obey one law. The fragment is the subject's own: the page they held when the world briefly made sense — and the memory beneath it of a time someone explained a thing to them and the whole confusing sky of their life clicked, for a moment, into order.

From the record

the Principia — Philosophiæ Naturalis Principia Mathematica — was published in London on July 5, 1687
the Royal Society had spent its book budget, so the astronomer Edmond Halley paid for the printing out of his own pocket and saw it through the press
the book set out the three laws of motion and universal gravitation — the same law holding the falling apple, the tides, and the moon in its orbit
its famous thought experiment pictures a cannon on a mountaintop: thrown hard enough, the ball never lands but falls around the world forever — the first clear picture of an orbit
compositors of the day set type letter by letter, by hand, in mirror image, and could set languages they could not read
printed sheets came off the press wet and were hung on lines to dry before folding and binding; spoiled proof sheets were the printer's scrap

The era door

a narrow oak door with a small leaded window, ink-dark smudges around its iron latch, the smell of lamp oil and paper beyond it

LONDON — JULY 5, 1687

Walk this day yourself — free

A guided walk with Wallace — you are placed inside the record as a witness, and you carry a memory of your own back out. Free, ~20 minutes.

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MEMORY IS RESISTANCE · IN SERVICE OF VELOCITY · YEAR 3037