Can you elaborate on why you think Google wouldn&#x27;t know before FB?<p>Many (most?) people don&#x27;t go posting anything about pregnancy before for ~3 months traditionally, and odds are you are going to be searching for symptoms when you first notice something is wrong health-wise.<p>When a doctor or test confirms you are pregnant, I&#x27;d be willing to bet that users are immediately pulling up their favorite search engine to figure out next steps vs. blabbing about it to their BFFs on FB.<p>Now, if you are basing it purely off of carpet bombing people targeting off of demographics, yes, FB probably has more solid data there as it is self-reported and not inferred. But you sure as heck won&#x27;t get self-reported pregnancy info earlier than Google will know you are interested in it.<p>If anything, I&#x27;d argue Amazon would have that data in a similar timeframe if people start looking up pregnancy books.<p>This also entirely discounts the notion that there is 3rd party data sets at play which both Google and FB leverage to enrich their data.<p>All of this is not to say your point on the brand advertising is incorrect--I actually agree with that as the &quot;feed&quot; has become the new television.  But definitely do not agree on the specific example cited.