Doubling your reading speed is easy.

But how the heck can you triple your comprehension?

Most people read with a comprehension level of around 60% (retention, of course, is something completely different). Tripling your reading speed? 120% comprehension?

That's as absurd as that one outfit that offers a course involving mentally photographing pages, similar, kinda, to PhotoReading. They say, "100% retention for life."