Language Learning In 6 Weeks?

I recently read in the book, Stealing Fire by Steven Kotler & Jamie Wheal, about Navy SEALs who utilize sensory deprivation float tanks to optimize their training:

"Working with researchers at Advanced Brain Monitoring, in Carlsbad, California, they've hotwired neural and cardiac feedback loops, digital displays, and high-fidelity sound into the experience. They're deploying these upgrades for a practical purpose: accelerated learning. By using the tanks to eliminate all distraction, entrain specific brainwaves, and regulate heart rate frequency, the SEALs are able to cut the time it takes to learn a foreign language from six months to six weeks."

Well, as a language teacher and language learner, that definitely piques my interest. I'm partially skeptical but partially intrigued. I would definitely agree that there's a lot of room for improvement in the area of optimizing learning. Interested in seeing how technology like this will become available to consumers.