I think it probably depends massively on the skills and experience of the person attending the bootcamp. If the extent of their technical skills is being able

I think it probably depends massively on the skills and experience of the person attending the bootcamp. If the extent of their technical skills is being able to make a good-looking Powerpoint, then I'd be astonished if 12 weeks were enough to make them even minimally employable (unless they really are some kind of eidetic wunderkind); if, however, they had a hobbyist's knowledge of - let's say - a few web technologies, or perhaps had previous informal development experience, then a 12 week crash course on a carefully curated set of the absolute fundamentals to make someone a junior developer might result in someone worth giving a job to. That said, I'm suspicious of this too. You can certainly teach someone git, HTML, CSS, JavaScript, SQL, and Rails in 12 weeks - but you can't go very deep with any of them.