What logical flaw might one uncover in the idea that "democracy is based on self-interest"?

The assertion that "democracy is based on self-interest" can display a logical flaw known as composition. This flaw occurs when one assumes that what is true for individuals or parts must also be true for the whole. In this case, while individual voters may act out of self-interest, it does not logically follow that democracy as a system functions solely based on self-interest. Democracy encompasses a wide range of motivations, including altruism, civic duty, and the pursuit of the common good. By concluding that the entire democratic process is grounded in individual self-interest, the argument overlooks the complexity of human motivations and the diverse reasons that people may participate in democracy, which can extend beyond mere self-interest.

Therefore, recognizing this flaw helps to better understand the nuances of democratic participation and the motivations behind voter behavior.