Separate reply because it's a separate topic: Dynamic types aren't the reason for Ruby's slowness either. The Racket code that beat Ruby by 25x in the Mandelbro

Separate reply because it's a separate topic: Dynamic types aren't the reason for Ruby's slowness either. The Racket code that beat Ruby by 25x in the Mandelbrot benchmark has no type annotations: http://benchmarksgame.alioth.debian.org/u64/program.php?test=mandelbrot&lang=racket&id=4 http://benchmarksgame.alioth.debian.org/u64/program.php?test...