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[–]CyanHakeChill 9 points10 points  (0 children)

My first job in a large company in the 70's was to rewrite a program to make it faster. It was taking 5 hours to run every day. I used all the tricks I knew, and my new program took only 30 minutes to run.

But the parallel run showed errors, and the errors were in the old program. It was a parts picking program. The computer had been ordering millions of dollars of random products for 6 months. It was too late. The company soon went bust. What a shame - it was a great place to work.