Democracy originally used selection by lot. This is generally unknown until the discovery of the Aristotle’s Constitution of the Athenians in 1879
In 2014, two prominent US political scientists, Martin Gilens and Benjamin I. Page, authors of Democracy in America?, published a study of national surveys of the general public conducted between 1981 and 2002, and concluded that, “The central point that emerges from our research is that economic elites and organized groups representing business interests have substantial independent impacts on U.S. government policy, while mass-based interest groups and average citizens have little or no independent influence.”
https://ordoabchao.ca/volume-one/introduction
Selection by lot blocks the formation of corruption and the formation of clientele networks.
The argument against selection by lot is the obvious problem of selecting incompetent people. To remedy this the selection can be weighted by performance and ability to create a meritocratic system.