I think you are operating with a very narrow view. Only a ver, very small percentage of people, adults included, will dive into OS and kernel source code. A l

I think you are operating with a very narrow view. Only a ver, very small percentage of people, adults included, will dive into OS and kernel source code. A lot of computing can and does happen without having to operate at that level. In 35 years as a software/hardware engineer I have never had to go into OS source code for either embedded or worstation applications. I have written real-time operating systems from sctatch for embedded applications running inside customized processors I built inside FPGA's but that's about it. Yes, I am suggesting that the lack of access to source does not limit growth or learning in any way. They can always run Linux on any platform and go as deep as they with. That's the other point. When the platform costs $35 you can certainly have more than one and play with different OS's and applications.