Pick up lines don't work well as flirting or seduction techniques because they have similarities to advertising, are clichés, and tend to be boring. Firstly, pick up lines often resemble advertising strategies by using catchy phrases or exaggerated claims to grab attention, which can come across as insincere. Secondly, pick up lines are often clichés that have been overused and lack originality, making them less effective in creating a genuine connection. Lastly, using pick up lines can be perceived as boring because they lack authenticity and fail to engage in meaningful conversation. Therefore, all of the above reasons contribute to why pick up lines are not successful in flirting or seduction.