I like the doable attitude of this - and the words hold true. Very few 'inspirational' things I read actually manage to break things down to something reasonable. Once the teacher strikes here (In norway) stop, I start language classes. The teacher doing the initial questions told me I have 550 hours of required language classes - but then made sure I know I get up to 3000, with the note that 550 hours really isn't e…
In each case, I've been able to have conversations with native speakers after the program ended.
The next step, to really master any of them, would be going to one of those countries. Suppose I spend four hours a day in conversation with native speakers. 1 week = 28 hours. 3 months = 336 hours.
Total of 381 hours. I'd be astonished if that program didn't make someone fluent, at least in a language with some similarities to their native language, as close as any of the romance languages are to English.
I'm speaking from experience, having got part of the way with Italian and Portuguese, and having had a six month visit to Cuba make me fluent for all intents and purposes (but I didn't do Pimsleur before, just ineffective college classes)
The key to shortening is the intro lessons which make all additional practice much more effective, since you can simply practice by fluid conversation. This isn't the only method; I've heard very good things about Benny Lewis' method as well.