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My Dad - who has two physics degrees - and I got into a big discussion about time travel the other day.
We've been having this exact same talk on this exact same topic since I was probably 10 years old. And because they're with my father, I never tire of them. As I've said here many, many times, my Dad is the wisest man I've ever known. He's now 78 and is finally retired. And I still turn to him all the time for advice on business problems and parenting.
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