[k__]

The problem here, as always, is to define value.

Do poor people provide the least value, because they don't work or only do menial jobs?

Do rich people provide the least value, because they keep most money to themselves or invest in their own interest?

[Atlantium]

Value here is defined as the NECESSARY tasks required to maintain the civilization whether they be menial or intellectual. Needs not wants. Tasks that provide food, shelter and the basic life sustaining requirements so that other ventures can be pursued. No civilization can exist without these. People that don't or cannot work are not as valuable. This is harsh but is in tune with reality. People that choose to invest in their own interest form a split. Some when investing in their own interests create value for their civilization. Others do not and in fact drain value from civilization. They do this because they can. Any civilization will have a given amount of drainers and can indeed sustain a certain amount of drainers unless they drain enough resources to collapse the civilization. The other consideration is that while what I have said uses logic, many humans rely of emotional reasoning over logic. In order to make these people provide value a certain amount of emotional manipulation is also necessary,

[marcosdumay]

I read the GP as meaning that people spreading lies provide less value than people spreading truth.

Of course, deciding what is a lie isn't trivial, so system that enforces that will be complex and unstable. But that does not automatically means it's a bad system.