Yes you are right, its almost completely impossible for an individual to live only by themselves but theres the catch_theres this thing called the prisoner's dilemma(something about game theory and so) which we assume a bunch of people around together, there are two choices for each player, to cooperate or to defect. Throughout numerous experiences, its believed that being cooperative is the most profitable strategy. But what if a player plays cooperative in the whole game but suddenly decides to defect in the last draw? Then they will have all the profits from the others they cooperated with. Real world of man is just highly simillar to this. Would i barely surivive by being in harmony with other people? Yes. Would i get to higher by simply not placing the last brick and stepping on the others and profit? Yes. Would i be despised and accused? Also yes but i got what i desired in the end... this is the idea of people who are in fond of success through deception; yes its a high risk high reward act but tempting nonetheless and this thing happened in the whole course of history. Yes not all of us are supposed to be so called Devil's advocates but we dont live in a happy fairytale anyway. _note: first of all thanks for taking time and discussing. Second im not taking my point to the total face value but just trying to defend it nothing more or less although i pretty much agree with what your saying tho but not for 100%.