Bakshy et al. (2015) found that both algorithmic ranking and individual choice reduce cross-cutting exposure, but user choice was the larger filter.

<iframe
  src="https://www.isonomia.app/embed/claim/d1bcdd1af175c17254a5e11824533063ccddfec422c1ca94151fee855d2113f4"
  width="600"
  height="280"
  frameborder="0"
  style="border: 1px solid #e5e7eb; border-radius: 8px;"
  title="Isonomia Claim"
  loading="lazy"
></iframe>

Copy and paste into any website or forum that supports HTML.