I mean is that really a controversial statement?

I've been doing self-studying for the past few years and there's no way I could possibly truly learn the bulk of CS in only nine months. Every skill needs many hours of practice and the brain needs time to process information. Unless you're part of the 1% of people who are extremely quick learners and have profound memory retention skills, most people need a lot of time to comprehend complex topics. It's not pure coincidence that some of the best performers of a lot of subjects started when they were young: by the time they were in college/adulthood they already had thousands of hours of practice.

>> I mean is that really a controversial statement?

Yes. "Biologically impossible" is quite the high standard to meet.

Could you learn all of computer science in nine months? No.

Could you learn the necessary CS fundamentals that are included in a CS degree in nine months?

Nine months of Lambda School full-time is virtually equivalent to the amount of time you'd spend in the CS portion of a four-year CS degree.

Lambda school has 8 weeks of CS and the rest is just learning frameworks. At least according to this:

https://lambdaschool.com/courses/full-stack-web-development

Also notable that the CS block is last, right before interviews. It would have made more sense if you put that first and then refereed to that knowledge in the other parts, but now it looks like Lambda school just treats CS fundamentals as interview prep instead of necessary building blocks.

It may be just a difference of bottom up vs top down teaching methods.

CS is interwoven throughout the entire curriculum, not just the final eight weeks.

Generally you need about ten years to mastery for about everything. But we're not talking about mastery. Nine months until you start being useful seems reasonable.