Positive: The device won't cut off your hands.
Negative: The device will cut off your head.
Maybe it's not so bad?
Positive: It won't cut off your head.
Negative: It will cut off your hands.
Positive: It won't cut off your head, your kids are entertained and happy because...
Negative: For about 20% of uses shocks the shit outta you.
Still not enough? Ok
Positive: This device is great, doesn't chop off your head or hands and it doesn't shock you.
Negative: After about 3 months of heavy usage a small bit of plastic will break rendering the device inoperable. However it's easy to fix and you're a do-it-yourself guy. $1 at a local hardware store and it's good as new and will last you for many years to come.
Perhaps it's best to look at all the facts rather than just the positive ones.