The premise that US-specific algorithmic tuning explains US-specific polarization is unsupported speculation; US-specific non-algorithmic fa
The premise that US-specific algorithmic tuning explains US-specific polarization is unsupported speculation; US-specific non-algorithmic factors (two-party system, partisan media, elite polarization) are more parsimonious explanations.
Cross-national divergence in polarization trends exists despite similar social media diffusion across developed democracies.
The US has distinctive non-algorithmic features (two-party system, partisan cable news ecosystem, high elite polarization) that distinguish it from other democracies with similar platform adoption.