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EWD Manuscripts
Dijkstra's sequence of over 1,300 numbered, mostly handwritten technical notes — the primary medium of his thought, and one of the most unusual bodies of work in twentieth-century intellectual history.
The EWDs are Dijkstra's numbered manuscripts, composed over nearly five decades and ranging from one-page aphorisms to forty-page formal developments of algorithms and proofs. The name comes from his initials (Edsger Wybe Dijkstra) and the series runs from EWD1 in the early 1960s to EWD1318, written shortly before his death in 2002. The manuscripts were circulated informally — photocopied, mailed, pinned to colleagues' doors — and constitute Dijkstra's primary medium for technical communication. They cover algorithm design, program verification, pedagogy, philosophy of computing, and occasional polemic; many of the most influential ideas in twentieth-century computer science first appeared in them, including structured programming, separation of concerns, and the mathematical treatment of program construction.
In The You On AI Field Guide
The EWDs are unusual in format and in practice. Most are handwritten, in Dijkstra's distinctive clean script, and many include small corrections and marginal notes that show the trace of composition. They were not peer reviewed. They were circulated to a personal