Let's Get Real

Altruism is a blatant myth. A definition that was made up by some guy who probably had a little bit too much to drink. Genes do not way up one morning and say "let's help people for no reason." This never happens, people help only to be helped in the future. So would say that it would be perfect to construct a community that revolves are "you scratch my back, and I will scratch yours."
Unfortunately the world is not so pretty, and cheaters will always break this process, due to the simple fact that: “Cheats do better than indiscriminate altruists because they gain the benefits without paying the costs.” (184) Each organism wants to waste the least energy possible to be helped and to be help. It's as simple as that. I like to think of this process as a system of government. 
One would be labeled as in a complete idiot if one said that no government consists of corruption. Not even the most minimal form of surpassing the margin of the law. My analogy might be a little too "made-in-Hollywood" but it is quite clear. Government officials exchange favors all the time, whether it be money related or power related: there is something being produced behind all the work. But when the scandals explode a few officials are left in the spotlight. These men can be considered to be the cheated or the suckers. The suckers who were involved in a cycle of favor, and once the cycle is discovered by someone who probably was cheated on, the ones who can save themselves will. Thus creating the other two divisions. The Grudgers who: “if any individual cheats them, they remember the incident and bear a grudge: they refuse to groom that individual in the future.” (185) And the Cheaters who in this case don't return the favor and leave the suckers alone. The Grudgers can either be the ones who expose the scandal with wanting to avenge a past moment. Or the Grudgers can evolve from being the suckers to a Grudger. Remebering the betrayal he experienced. 
If one steps back and analyze the situation: you see self-interest everywhere. Whether it be to: avenge, save oneself, or one hundred percent profit. No one works to receive nothing at the end of the day. So the question I ask myself is: if knowing that a world with no cheaters would prosper, then why not construct it? 
Silly me! That's a pretty easy question to answer: Self-Interest.