flying chainsaws

[flyinglobster]

I read a post here regarding the relative safety of drones in which someone averred that "plastic blades wouldn't draw blood". What? At 7000+ rpm? I know a hotel owner with a handful of fingers missing who might convincingly argue this point. So might my late dragon palm. The leaves were reduced to shreds and it chopped through three 10 mm stems.The blades and Karma drone were undamaged. Wouldn't draw blood? I take it physics wasn't his strong point.