Imagine someone giving you a executable binary without the source code and calling it "open source"
What if someone gave you a binary and the source code, but not a compiler? Maybe not even a language spec?
Or what if they gave you a binary and the source code and a fully documented language spec, and both of 'em all the way down to the compiler? BUT it only runs on special proprietary silicon? Or maybe even the silicon is fully documented, but producing that silicon is effectively out of reach to all but F100 companies?
It's turtles all the way down...
Free(dom Respecting) Software wasn’t just about the source code.
https://www.gnu.org/philosophy/open-source-misses-the-point....