SOLID often comes up against YAGNI (you ain’t gonna need it).

What makes software so great to develop (as opposed to hardware) is that you can (on the small scale) do design after implementation (i.e. refactoring). That lets you decide after seeing how your new bit fits in whether you need an abstraction or not.

If China is okay with the sale that means it’s not good for the US. Danger, Will Robinson, danger!