[AdamHeard]

I know others have said it, but I'm concerned about the safety here.

If those blades break, which could happen, they will be sent flying at extremely high speeds, with lots of energy.

I'm usually the guy telling people worried about safety to shut up, it's fine. But this is one case where it seriously scares me. You could send shrapnel at extremely high speeds into the audience, which could kill somebody if hit right. It's unlikely, but too high a risk for my liking.