SIZE CHARTS
shoes, tops, bottoms — and a centimetre under every grid
GIT WORKING AREAS
four areas · the command that moves code between them
MAMMALS IN TIME
from the first synapsid to us · 320 million years on one axis
VERTEBRATES IN TIME
when each group appeared · five hundred million years on one axis
BASIC PHYSICS FORMULAS
fifteen formulas · every letter explained beneath it
ANIMALS
the main branches — from comb jellies to chordates · who is actually related to whom
VERTEBRATES
from lamprey to bird · and why "fish" and "reptiles" are not groups
MORSE CODE
26 letters and 10 digits · dot, dash
THE BASKETBALL
four FIBA sizes with their circumference and mass — and why the rules set a bounce, not a pressure
BALLS BY THE RULES
eleven sports at true relative size — circumference, mass, pressure, and who sets them
BICYCLE CLASSES
frame, wheel by ISO 5775 and handlebar — three signs of a class, and what the frame is rated for
CAR CLASSES
segments A to F by length and bodies by box count — how to name any car you see