Visgraf 21 anos

http://www.visgraf.impa.br/21anos/

2029

Visgraf is completing 20 years
( http://www.visgraf.impa.br/visgraf20anos/).

In 1989 there were no Twitter, Google, iPhone, Blogs...

I was just wondering what will be essential in 2029...

I can only think of coffee.

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Hello World!!!