technische Zeichnung. German technical drawing is governed by DIN standards covering projection method, line types, dimensioning, section marking and title block content. Two engineers who have never met read the same drawing identically, because the conventions are national and taught.
engineering
The standards body
The Deutsches Institut für Normung maintains tens of thousands of standards. DIN A4 is the famous one. Most of the rest govern things nobody outside the trade has heard of.
A standard is a problem somebody already solved, written down so that nobody solves it again. It is prevention in its most literal form: the mistake is designed out before the work begins.
Process capability
German manufacturing measures whether a process is statistically able to produce within tolerance, as an index, before any particular part is inspected. The question asked is not whether this piece is good. It is whether the process can produce good pieces.
The socket
The German Schuko socket earths through side contacts that engage before the pins make electrical contact, and it is recessed so that fingers cannot reach a live pin. The safety is in the geometry, working before the user has done anything.
The project management standard
The German standard for project management defines the terminology, the process model and the required documents. Project management in Germany is itself standardised — there is a DIN number for how to run a project.
Plug and play
An American phrase for hardware that configures itself on connection, and it passed into general business speech for anything that works without setup. The claim is about the absence of preparation.
Prototype
American design practice builds rough physical versions early, specifically in order to find out what is wrong with them. The prototype is not a draft of the product. It is an instrument for generating objections.
The what and the how
German engineering practice separates two documents, both defined in DIN 69901-5 and VDI 2519. The Lastenheft is written by the customer and states what is required and why — deliberately solution-neutral. The Pflichtenheft is written by the supplier in response and states how it will be built.
The what and the how are different documents, by different authors, in a fixed order, and together they form the contractual basis of the project.
Ergonomics
German workplace regulation specifies ergonomic requirements for seating, screens, lighting and reach, enforced through occupational safety law and inspected. The body is treated as a design constraint with numbers attached.
The Wright brothers at Kitty Hawk
Before the powered flight of 1903 came years of gliders, launched and crashed and rebuilt on the same stretch of sand. They built their own wind tunnel because the published lift tables were wrong. They did not calculate their way to flight. They flew, repeatedly and badly, until it worked.