if you don't understand EVERYTHING about this, don't touch it, on risk of life and limb This is actually pretty good advice for smartphones, too. Okay, it won

if you don't understand EVERYTHING about this, don't touch it, on risk of life and limb This is actually pretty good advice for smartphones, too. Okay, it won't hack off your leg, but it may affect your life profoundly and adversely in ways that are not obvious at first.