Comment: Excellent questions.

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Excellent questions.

I hope that jabowery will return to answer these.
In the meantime, let me give you my personal shoot from the hip.

"Sufficient property" is one of those "Devil in the details" items that could and should be amenable to redefinition.

In reality, there IS a level of "sufficient property" whether we can define it adequately or not. But we need to understand that this is a concept inextricably bound to survival; survival in a Darwinian/sociobiological sense.

Do population growth and economic disasters (famine, hurricanes, malinvestment, etc.)put a strain on a nation's resources? Of course they do.

And if the strain is great enough, people die of starvation. With lesser strains, people fail to reproduce (as the cost of supporting a family becomes prohibitive).

Historically, whenever the percentage of the population threatened by these alternatives becomes high enough, a revolution occurs and a new government (i.e. wealth re-distribution scheme) is established.

The more visible and unequal the distribution of wealth, the sooner the citizens revolt.

Any definition of natural law and natural rights which ignores their roots in survival/reproduction is inadequate at best.

THIS is the Achilles heel of any free society.
Idealists who glibly place property rights ahead of survival (and reproduction!)of the citizenry are dooming their society to failure.

In your example of the elder approaching "retirement"; there is no easy solution. Our instincts allow us to respect and value them in general. In the past they were a scarce resource of knowledge and accumulated wisdom.
But what of a society in which the infirm elderly are legion, outnumbering the productive and reproductive segments of the population?

This isn't just a problem for jabowery's society.
It is a universal problem for any civilization whose medical technologies have allowed population increases (by increasing lifespans, decreasing infant and maternal mortality, etc.) beyond the productive capacity of their human and natural resources.

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The Virtual Conspiracy