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Is there a realistic approach to provide a "comfortable" way of life to every human being on the word? Can the Earth support it?

I'm sure you have, at one time or another, asked yourself how many earths would we need to satisfy the needs of everyone.
Or a matrix like infinite world will be the solution?
Science fiction has come up with a lot of ideas, but are we really getting closer or further away from eradicating poverty? and I don't mean just to ease the suffering, but to actually make it disappear.
Is money part of the solution or part of the problem?

Or maybe the world can handle us all and more!

What do you think?


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    Feb 27 2011: Most of the comments seem to be discussing maximum population and food production. I think your actual question is more interesting: can we sustain a moderate level of comfort for everyone?

    There's currently enough food produced in the world to feed everyone, the problem is distribution. Enough produce is thrown away in American supermarkets to feed great quantities of hungry people.

    But can we construct social, legal, and architectural system to provide comfort to everyone? That's tricker. To spur some conversation, I'll outline a first draft of what I'd say 'comfort' should look like:

    - access to clean water
    - reliable source of (a minimum amount of) food
    - architecture to protect people from the hazards of their environment (e.g. air conditioning in Texas, insulation in Siberia)
    - reliable legal rights, especially property rights and the protection of women

    Most of the discussion so far is about the first two points. I think most of our work is in the last one. Even were there to be massive food surpluses (as there are every few years) there is no comfort to be had if a population of women fear for their safety or if citizens cannot rely on a court system to enforce equal protection.

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