Timelines are a tough, sometimes misleading/information-hiding format...they have a systematic look akin to data, but are much closer to regular editorial content in how they're produced.<p>Case in point, the Person Finder is mentioned twice on the Timeline, for the Tokyo Earthquake and the Boston Marathon bombings, but not for the event at which it was conceived -- Hurricane Katrina (<i></i>correction at bottom) -- something that was arguably a more epic disaster than the bombings or earthquake, while at the same time being a much bigger and more surprising technical feat at the time...given that it was 2005, when Facebook and the social web had been barely a product.<p>- <i></i> My bad, Google's actual adoption of Person Finder was during Haiti in 2010, which, well predates both Tokyo and Boston and was definitely a bigger disaster in terms of human life than both. But Haiti isn't mentioned in the Google timeline<p><a href="https://support.google.com/personfinder/?hl=en" rel="nofollow">https://support.google.com/personfinder/?hl=en</a><p>But the Tokyo earthquake and Boston bombings are more fresh in our mind, hence their greater prominence on a timeline generated from today's perspective.<p>(Not criticizing anything in particular about the OP, just pointing out that timelines can be just as obfuscating as they are clarifying, and the Person Finder example stuck out to me)