40,000 people searched it. The box shouldn't suggest it.

transcript

11 PM. A rumour says a famous actor has died. Within 15 minutes, 40,000 different people search for it. Should the search box suggest it?

40,000 different people. It passes every crowd test. And it's the fastest-rising query. Any trending system would grab it.

But here's the catch. A suggestion isn't a search result. It's the system speaking. It puts words in front of people who never typed them.

Suggest it, and the box becomes the rumour's amplifier. So a policy filter catches names plus death, crime or health. Trending entries about people wait for a human. And anyone who types the full query still gets results.

And if one slips through anyway? You need a kill switch. A serve-time blocklist, updated in seconds. Plus a CDN purge. Gone in seconds.

Google filters unconfirmed rumours after a news event. And its rules cover predictions only. Not search results. Anyone can still search it. The box just won't suggest it.

Full breakdown in the lecture.