| It was predicted that altruists and non-altruists would still be differentiable to perceivers with respect to helpfulness. |
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| So they can be altruists helping each other in this society, not being egoists. |
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| The altruists, old hippies and ideologues among them are also motivated by a deep desire to see systemic change in the world around them. |
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| So even if a group is composed exclusively of altruists, all behaving nicely towards each other, it only takes a single selfish mutant to bring an end to this happy idyll. |
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| Clearly the altruists will be at a fitness disadvantage, so we should expect the altruistic gene to be eliminated from the population. |
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| Unlike the human examples, these animal altruists do not perhaps deserve to be called heroic, and they are acting only in defense of their own kin. |
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| Educated people are altruists, that is to say, terrorists cannot be educated people. |
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| Of course, it's not exactly hard to find billionaires who think of themselves as altruists regardless of the obscene amounts of wealth they accumulate. |
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| These volunteers, altruists, committed to the common cause and to the service of others, animate and develop with dedication the 185 local clubs and associations. |
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| This confirms the point noted in section 2 that altruism can only evolve if there is a statistical tendency for the beneficiaries of altruistic actions to be altruists themselves. |
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| The competitor between the two forces can be succinctly expressed as follows: within groups selfish individuals beat altruistic individuals, but groups of altruists beat groups of selfish individuals. |
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| However, kinship is really only a way of ensuring that altruists and recipients both carry copies of the altruistic gene, which is the fundamental requirement. |
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| If altruism is to evolve, it must be the case that the recipients of altruistic actions have a greater than average probability of being altruists themselves. |
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| They are the people whom one can rightly describe as altruists. |
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| This event couldn't have been possible without the efforts of the altruists that helped in their spare time. |
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| In the second situation, although altruists cannot change egoists-which unfortunately remains a Utopian undertaking-they can establish a system in which egoists benefit by behaving as if they were altruists. |
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| Bardsley and Moffatt use data from a unique variation on the VCM to estimate a mixture model to distinguish altruists from reciprocators. |
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