This "8 week" number thrown around by every company looking to teach people to code where did it come from? Does someone have an independent study that backs up the 8 week figure or is everyone choosing it because it sounds good?

I love all these programs now and believe 8 weeks is enough to learn the basics. The goal after the program would be to instill a life long quest to better your skills each day not how much iOS makes you a hotshot.