SEMANTIC VERSIONING
what each of the three numbers means, what may follow them, and the order versions stand in
THE CONDITIONS OF TRAP
FIVE conditions from the standard — EXIT and four signals — and three extensions a conformant shell refuses
ARABICA AND ROBUSTA
two species, six varieties, one difference
MATCHA GRADES
ceremonial, premium, culinary — what is behind the words
SPIRIT HOMELANDS
where the law lets Scotch, bourbon, cognac and tequila be made — seven spirits, three scales of place: a country, a part of one, a drawn zone
SPIRIT RAW MATERIALS
what the law lets whisky, rum, brandy and tequila be distilled from — ten spirits, seven raw materials, two regulations
YELLOW TEA
yellowing under a cover · the step no other tea has
FIRST FINGER FOODS
the size, the softness and the shape of a piece for a baby who feeds themselves, by the NHS guidance
THE 9 MAJOR FOOD ALLERGENS
the foods US law singles out by name, and the two ways a label is allowed to say so
CULINARY KNIFE CUTS
julienne, brunoise, bâtonnet and the family of dice — the Culinary Institute of America dimensions, drawn to true scale
NEAPOLITAN PIZZA DOUGH
four ingredients in the proportions written into an EU regulation
POUND CAKE
four equal weights — a recipe whose name is its ratio
PROTEIN IN FOODS
grams per 100 g · animal and plant · and the state each one was weighed in
ENGLISH PUNCTUATION
twelve marks and the three strokes: a name, a job and one working example for each
LANGUAGE FAMILIES
who is related to whom — on the numerals three and two in twenty-seven languages
THE COLLATZ CONJECTURE
halve the even, triple the odd and add one: the road of 27, the record holders and a problem nobody has solved
DIVISIBILITY TESTS
what to read in a written number instead of dividing it: the tail, the digit sum and composite divisors
THE DOOMSDAY RULE
the weekday of any date in the Gregorian calendar, worked out in the head in three steps
NUMBERS 1 TO 100
the hundred chart · primes picked out in colour
LEAP YEARS
one rule, a cycle of four hundred years and the ninety-seven extra days in it
MULTIPLICATION TABLE
1 to 12 · colour intensity = size of the product
THE RULE OF 72
the time it takes steady growth to double: the division you can do in your head, how far it misses and why the divisor is what it is
KINDS OF BASS
eight instruments at one scale · what each is about and how it sounds
CURWEN HAND SIGNS
one hand for each degree of the scale, with the mental effect John Curwen gave it