As someone who trains devs on rails I find that’s not true. In my experience if you have a developer of any experience level go through the full Rails tutorial

As someone who trains devs on rails I find that’s not true. In my experience if you have a developer of any experience level go through the full Rails tutorial they come out on the other side highly productive. I usually have people on my team do this on their own time and they usually finish within the first two weeks of work. What I will say is that the implicit, convention over configuration approach of rails means you really do have to RTFM. I find that the more experienced a developer is the more resistant they tend to be to this. But in general they all get over it after they read the manual.