[Availability of someone to do CPR...]
Or at least call 911 while you're swearing a blue streak at halving let that
cabinet crush your legs after it fell down the stairs...
Either way, when doing dangerous stuff, it's ALWAYS useful to have someone
around. Even if they have no technical knowledge, anyone can dial 911.
Minor as that is, it's much better than screaming your lungs out from the
basement when you broke an arm, or bleeding/burning/frying to death with
nobody around.
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