In the example given, I think if people are incompetent enough to risk themselves physical injury or death for the sake of picking up pennies, that’s pretty good evidence that they can’t safely live on their own without supervision.
If they managed to survive long enough to get to the railroad track to pick up the pennies, they’re probably able to live on their own without supervision unless there was an extreme stroke of luck involved (such as having been released from custody fifteen minutes ago).
In the example given, I think if people are incompetent enough to risk themselves physical injury or death for the sake of picking up pennies, that’s pretty good evidence that they can’t safely live on their own without supervision.
If they managed to survive long enough to get to the railroad track to pick up the pennies, they’re probably able to live on their own without supervision unless there was an extreme stroke of luck involved (such as having been released from custody fifteen minutes ago).