These are actually training lightsabres the kids are using here. Supposedly they aren't powerful enough to sever limbs, but they can cause pain, bruising, and minor burns. Okay, they're not lethal, but would you trust a bunch of six-year-old kids with devices that can do that?

I bet they don't have properly fitted child restraints in their starships in this universe either.

Transcript

Obi-Wan: You wanted to see me, Master Yoda?
Yoda: Yes. These children, remind you of something, do they?
Obi-Wan: Er... my own training as a Jedi from a young age?
Sally: Oooh! There are Jedi kids? Can I be one?!
Yoda: Uh... be one you may.
J. K. Burtola: {played by Sally} Cool!
Yoda: Now, Obi-Wan. Found anything - or anyone - yet, have you?
Obi-Wan: The dart is from a planet named Kamino, but I haven't located it yet.
J. K. Burtola: Dogs ate the library books!
Obi-Wan: Yes. And who could... release dogs into the Jedi Archives?
J. K. Burtola: That evil old librarian!
Obi-Wan: Hmmm. This is even more serious than I thought.
GM: <sigh>