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Google, Bing and Brave all put a generated answer above their results now,
and none of it is being read. Investigated against castle's Chrome; nothing
in src/ changed, because the cost turned out to be worth deciding on rather
than absorbing.
Two things make it expensive. Google's AI Overview exists only on the
classic layout — udm=14 is the "Web" tab, and having no overview is part of
what that tab is — so enabling it means giving back the clean page the
extractor was built around. And all three stream in after the results are
already parseable: Google settles ~2.3s in, Brave was still growing at 5s,
against an extractor that returns at ~0.5s. The wait is often wasted, since
the blocks are query-dependent — no Google overview for "how does postgres
MVCC vacuum work" after 15s, no Bing answer for "who founded anthropic".
Selectors, the traps behind them (#m-x-content briefly holds ~29k
characters of unrelated page; Google's "Show more" hides only the
disclaimer), the measured timings, three possible designs and their
tradeoffs are all in the doc, so this does not have to be re-measured if
the answer turns out to be yes.
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