The paradox of pluralism: A key to interpreting the online public sphere in the time of 'encastellation'

This viewpoint makes a theoretical effort to label the organization of the virtual sphere under new concepts: 'encastellation' and the 'paradox of pluralism'. The former is a metaphorical synthesis of already-known concepts (selective exposure, polarization, homophily, echo chambers and filter bubbles). In the second case, we emphasize the existence of a 'paradox of online pluralism': the internet has increased the possibility for everyone to make their voice heard (in quantitative terms), but at the same time it appears to also be increasing the distance between voices, putting in jeopardy the achievement of the aims of the pluralist political system (in qualitative terms). In conclusion, we express doubts about the feasibility of the deliberative vision of democracy in the current virtual sphere.