 Some dispute whether epistocracy would in fact perform better than democracy, even in principle. Epistocracy generally attempts to generate better political outcomes by in some way raising the average reliability of political decision-makers. Political scientists Lu Hong and Scott Page (2004) adduced a mathematical theorem showing that under the right conditions, cognitive diversity among the participants in a collective decision more strongly contributes to the group making a smart decision than does increasing the individual participants’ reliability. On the Hong-Page theorem, it is possible that having a large number of diverse but unreliable decision-makers in a collective decision will outperform having a smaller number of less diverse but more reliable decision-makers. There is some debate over whether the Hong-Page theorem has any mathematical substance (Thompson 2014 claims it does not), whether real-world political decisions meet the conditions of the theorem, and if so, to what extent that justifies universal suffrage, or merely shows that having widespread but restricted suffrage is superior to having highly restricted suffrage (Landemore 2012; Somin 2013: 113–5).