The system never is stupid because the stupid would be the human because simply, we created them to act like that.
1. Open World Editor
4. Test Map Tab
5. Untick the "Use Fixed Random Seed"
You're good to go.
If you want to ask "why the hell do they want to get a same value whereas the system itself if called random?"
Well, for some experimenters who wants to repeat the test, they will do it in a controlled variable, where you can easily catch a data or whatsoever.
It is really useful for experimenting with random values with a controlled situation.