一个人人际关系的不幸，都是单纯造成的

Group 1 - The article emphasizes the complexity of human nature and warns against being overly naive in interpersonal relationships, suggesting that excessive simplicity can lead to personal harm [3][5][15] - It shares anecdotes illustrating the consequences of blind trust, such as a colleague taking advantage of another's willingness to help, leading to betrayal and loss [6][10][15] - The narrative highlights the importance of recognizing the duality of human nature, where kindness can coexist with selfishness, and encourages a balanced approach to trust and caution in relationships [32][42][45] Group 2 - The article references successful individuals like Bill Gates, who understood the necessity of setting clear boundaries in partnerships to protect relationships from being compromised by financial interests [36][39][42] - It advocates for a mindset that combines kindness with a degree of skepticism, suggesting that one should be open-hearted yet maintain a level of awareness to avoid being exploited [47][49] - The conclusion encourages individuals to engage sincerely with those who deserve it while being cautious with those who do not, promoting a balanced approach to relationships [50][51]