re: What is the best invention of the last 50 years and why?

The personal computer.

ETA: might have just missed the cut for 50 years, though.

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Saran wrap

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Remote Control

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Tesla invented a remote control toy boat in 1898.

I would say the internet, and more specifically Google. I do not know how people graduated college prior to this.

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Nah, baw. We needed the microprocessor from late 60s/early 70s for the Internet to be a thing

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bullshite.

We could run that bitch off vacuum tubes and steam.

The internet is more than 50 years old

whatever the scheduling software is that allows logistics to work like it does - trucks, ships, planes, trains

second to internet unless the internet is really over 50 but the wide use internet isn't