this post was submitted on 21 Apr 2026
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Free and Open Source Software
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If you're referring to GPL variants, that depends. You can absolutely use GPL software and libraries with closed source software. You just need to separate the GPL portions from the closed source portions with some sort of boundary, like running it as a service of some sort or turning it into a CLI tool. You're just not allowed to create derivative works of GPL software that isn't also GPL.
Also, there should be nothing dangerous about open sourcing code (unless you're referring to financial risk to the business I guess). Secrets should never live in code, and obscurity is never secure.
Pretty sure that e.g. manufacturing techniques for physics based design are highly problematic. So is the software for military communications. The real world is in fact real.
What does any of this have to do with GPL or open source licenses? Military applications all have strict validation requirements that rule out the majority of open source anyway, and your first example doesn't even explain how the software being open source would be dangerous at all. Actually, for that matter, nor does the military example. Encryption doesn't work because the other party doesn't know your algorithm lol, it works because the other party doesn't know your secret keys.
Your first example isn't even code, and in your second if the "software" was remotely well architectured its configuration (not code) is what would need to be kept secret. You're also very rude!
The first one is very much software. The software enabling such designs and processes is what makes it work.