If you can't even see the screen of the phone you're booting then how does it matter if the rest of the kernel is Free or not? A lot of the theory of optimizat

If you can't even see the screen of the phone you're booting then how does it matter if the rest of the kernel is Free or not? A lot of the theory of optimization can be reduced to speeding up parts of code actually being executed and paging out parts of the code never actually touched, which works because the source is not uniformly useful. A kernel would be useless without a scheduler, a GUI program would be useless without an event loop, no matter how "open" the code surrounding those are.