I feel that raspberry pi has another advantage -- it teaches people that not all computing is x86. x86 is always almost associated with proprietary close-source

I feel that raspberry pi has another advantage -- it teaches people that not all computing is x86. x86 is always almost associated with proprietary close-source code -- both in BIOS, in SMM and various motherboard peripherals. I personally would be very happy to use simpler devices, but if you want high performance and cheap, then x86 is your only choice. Using non-x86 devices like Raspberry Pi is the first step in breaking this. Yes, Pi itself has closed-source components, but once the people understand that it is feasible and not hard to run generic server code on ARM/RISC CPUs, the demand will appear, and the market would act and bring cheaper and faster servers to the market. And this is already happening -- for example I think odroids got popular only after Pi has created the demand. So if you have a choice between x86 and non-x86, chose the latter if you can, to make the world a bit more secure and open.