Q: where did the idea for the ground plane come from
A: on february 15, 2020, someone here asked me what the title of my next song would be, and for some reason i just said "it might be called ground planes but it might not". then i suddenly realized i should take that idea seriously, so i skipped that question and saved 'ground planes' as a 'title only' seed. that entry came up years later in due course, and i did the work