Why does every piece of advice need a counter pitch of a better idea? If I tell you “don’t stick your arm in a wood chipper, even if it’s not running”, I’m hopi

Why does every piece of advice need a counter pitch of a better idea? If I tell you “don’t stick your arm in a wood chipper, even if it’s not running”, I’m hoping you’re not going to be like “well then what should I stick my arm into?!” Presumably he didn’t give prescriptive advice because configuration isn’t one size fits all.