01 — ExploreFive fields

Start with somethingyou want to knownot with a syllabus

Every field here opens onto the machines that use it, the people who work in it, and the courses that teach it properly. Nobody has ever become an engineer because a curriculum told them to.

Fields: 5
Questions: 25
Moving figures: 5

Pick a field

Every field opens onto its own machines, its own history and its own way in. Pick whichever one already has your attention.

01 — AviationHow things stay upAir is a fluid, an aircraft is a machine for pushing it around on purpose, and every rule in the industry exists because somebody once found out what happens when you get it wrong.5 questions answered →
02 — AerospaceHow things go fastAbove the speed of sound the air stops getting out of the way in time, and every assumption that made subsonic flight easy has to be rebuilt.5 questions answered →
03 — EngineeringHow things get builtEngineering is the discipline of being wrong on paper before you are wrong in the air, and of knowing exactly how much margin you have left.5 questions answered →
04 — SpaceHow things leave EarthOrbit is not a height, it is a speed — and everything difficult about spaceflight follows from how expensive that speed is.5 questions answered →
05 — TechnologyWhat everything else runs onEvery aircraft and spacecraft flying today is a piece of software with a shape around it, and the software is held to standards the rest of the industry does not use.5 questions answered →