A report issued by institutions including Imperial College London forecasts that by mid-2025, roughly 35% of newly published website content will be generated wholly or partly by AI. Studies have shown that AI-generated content has a 33% greater degree of semantic similarity and a 107% higher positive sentiment score than content originally created by humans. This could lead to "semantic contraction" and a "positivity shift," heightening the risk of "model collapse" and compelling the industry to reassess its search and recommendation algorithms.
