The details of lexical scope where defined in Algol 60 (1960), nearly 2 decades before Rabbit (1978).
People did know how to implement things back then, and TeX is a great example of that. It is just our definitions have changed over the years of what we consider better.
The definition would certainly work in English countries, seeing it is just 0 to 10 degrees Celsius average over the course of a week (and after 15th of February).
Incorporating compatible code, under different license is perfectly OK and each work can have different license, while the whole combined work is under the terms of another.
I'm honestly quite confused what FFmpeg is objecting to here, if ILoveRockchip wrote code, under a compatible license (which Apache 2.0 is wrt. LGPLv2+ which FFmpeg is licensed under) -- then that seems perfectly fine.
The repository in question is of course gone. Is it that ILoveRockchip claims that they wrote code that was written FFmpeg? That is bad, and unrelated to any license terms, or license compatibility ... just outright plagiarism.
I think maybe you're mixing up distribution and running a program, at least taking your initial comment into account, "if you train/run/use a model, it must be open source".
That is not really correct, the GNU GPL doesn't have any terms whatsoever on how you can use, or modify the program to do things. You're free to make a GNU GPL program do anything (i.e., use).
I suggest a careful reading of the GNU GPL, or the definition of Free Software, where this is carefully explained.
Because it would violate freedom zero. Adding such terms to the GNU GPL would also mean that you can remove them, they would be considered "further restrictions" and can be removed (see section 7 of the GNU GPL version 3).
An employee doesn’t act as an official representative of their employer nor do they speak for the employee in any official capacity. That is what the message says.
The informal also didn’t cloak their identity (implies some malicious intent), they simple did not use their work email. Nothing wrong with that.