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@@ -2,9 +2,21 @@
 
 A study of [Andrew Kensler's "business card raytracer"][aek] — a complete
 recursive path-tracer with soft shadows, depth of field, anti-aliasing,
-reflections, a checker floor, and a sky gradient, all crammed into ~1337
-characters of obfuscated C++ small enough to print on the back of a
-business card.
+reflections, a checker floor, and a sky gradient, all crammed into a
+single C++ source file small enough to print on the back of a business
+card.
+
+> **`card.cc` is exactly 1337 bytes.** Yes, **leet**. Verify it yourself:
+>
+> ```sh
+> $ wc -c card.cc
+> 1337 card.cc
+> ```
+>
+> That is not a happy accident — Kensler golfed the source until it hit
+> the magic number. Every typedef (`i` for `int`, `f` for `float`),
+> every operator-overload trick on `struct v`, and every absent space
+> exists to land on **1337**.
 
 The original code is preserved verbatim as [`card.cc`](card.cc). A
 de-obfuscated, heavily-annotated rewrite lives in