A search engine can contain diversity that almost nobody sees.
The first screen is not the whole result set. It is the part most people treat as the result set.
That distinction matters because ranking systems intentionally compress enormous candidate pools into a very small visible surface. Google even describes a site diversity system intended to keep one domain from dominating too many of the top results in ordinary cases.
But “top results” is doing a lot of work there.
The sources visible after the first ten, twenty, or fifty positions may look quite different from the sources presented first.
Available diversity is not encountered diversity
A useful audit can record domains at multiple depths for the same query.
Perhaps the first screen contains national publishers, Wikipedia, Reddit, YouTube, and a few large commercial sites. Deeper results may introduce personal pages, regional organizations, specialist forums, academic PDFs, independent blogs, and old technical archives.
If so, the search index contains more source variety than the first screen suggests.
That does not mean users experience that variety.
A large Backlinko analysis of roughly four million Google results found a steep decline in click-through as ranking position fell and reported that only a small fraction of searchers clicked results on the second page. The exact percentage belongs to that dataset and period, not to every search forever, but the general behavioral point is hard to miss: deeper availability and actual exposure are very different things. See We Analyzed 4 Million Google Search Results.
Google also abandoned its experiment with continuous scrolling and returned to explicit result pagination in 2024, again placing a user action between the first batch of results and the next one.
Search depth changes the story you tell about the web
Suppose somebody searches ten technology questions and records only the first screen. They may conclude that the modern web is dominated almost entirely by a small group of platforms.
That observation may be accurate for first-screen exposure.
It does not establish that those platforms dominate every indexed result or every relevant page available farther down.
The opposite mistake is possible too. Finding fifty wonderful independent sites on page six does not prove ordinary users are discovering them.
A strong study should therefore report both things: the diversity that exists at increasing result depth and the probability that users actually reach those depths.
Dead Internet Theory often asks where the weird little sites went.
Sometimes they went nowhere.
They are still standing six blocks behind the billboard, while almost everyone turns around at the first intersection.