[Chris2048]

> Babies and old people are technically leeches

They are leeching, but I'd say "a leech" is someone who's lifetime average contribution is negative.

> assume a dollar

Hmm, at risking falling into a "glassmakers fallacy" type complexity, I feel money is transactional, and what it represents wrt "value" is complicated and cannot easily be divorced from the transactional nature (though it is handy shorthand for value in limited ways). From the perspective of an individual, a dollar earned via say, labour exchange is a dollar "created", but in general wealth was not really created, just transferred. I don't think individuals need to be on the hook for true wealth creation (humanity gets it for free, probably from the sun), but rather fair distribution - the things money buy are resources, much like one's personal time, and resources should in general be balanced, but not in a strict communist style, rather more than equal opportunity to acquire resources, with a market-led definition of value.

[TheOtherHobbes]

Define "negative."

Include externalities.

[Chris2048]

I think negative has a pretty clear definition in this context, if you want to say more about "externalities" maybe I can talk about it.