Introducing Mathematica Software 1989, Stephen Wolfram

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I was at University of Illinois at Urbana-Champaign in 1990 as a freshman, and was taking a discrete math class, which used the computer lab that had Mathematica on both Macs and a NeXT machine. It was a great experience, I spent so much time using the software afterhours, my professor ended up introducing me to Mr. Wolfram. Very awkward meeting, still remember it well

Brilliant software!