i will talk with the brilliant physicist carlo rovelli. >> time really goes at a different speeding defending how you move and where you are. >>> but first, here is my take. in september, google will celebrate its 20th birthday. when it was founded in 1998, it was one of many search engines. but it quickly became the chief gateway to the internet and is now one of a handful of tech companies that dominate not just the american economy but also increasingly american life. it recently received a birthday present from the european union, a record $5 billion fine for violating antitrust laws. that came just a week after the u.k. slapped facebook with a fine for allowing cambridge analytica to mine personal data from as many as 87 million facebook users. the penalty was much smaller, $660,000, but it was the maximum allowed under british law. these punishments are one sign that the era of unbridled faith and optimism in the technology industry is coming to an end. as the information revolution took off in the 1990s, we all got caught up in the excitement of the age, along with the novelty of the p

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