Either to boot them in 'live-mode' on bare metal without touching your installation, or put them in QEMU to test-drive them there.
Maybe skim https://genodians.org/ too, or if you've got the time watching others doing that (instead of yourself) there in reverse chronological order:
What I meant to say was to make up your own mind by going here:
https://genode.org/ reading that stuff, maybe proceeding further to
https://genode.org/download/ and choosing one of the Pre-built Sculpt OS images from there.
Either to boot them in 'live-mode' on bare metal without touching your installation, or put them in QEMU to test-drive them there.
Maybe skim https://genodians.org/ too, or if you've got the time watching others doing that (instead of yourself) there in reverse chronological order:
https://www.youtube.com/results?search_query=genode+os&sp=CA...
Don't read (outdated stuff). DO!