Introduction

One of my earliest memories is telling my parents that I saw a policeman getting out of a taxicab in our neighborhood. It turned out he was a military officer returning home from Vietnam.

Image A few months ago, I made a Skype call, via a mobile phone Internet service, from the backseat of a Mercedes-Benz in Ho Chi Minh City, Vietnam. Nothing about that call was even remotely conceivable during my youth.

Image A more recent memory is watching the Tiananmen Square demonstrations on CNN in 1989. Students were protesting for economic and political ...

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