This is a post by Cat McClintock on PTC site.
Not so long ago, engineers would have spent many hours hand-drawing a perfect solution to the problem their higher-ups or clients presented them with. Then they would send that solution over to analysis, only to be told the tests had failed. They would have to trash hours, days, weeks, months of work. And before they had computers, they would literally go back to the drawing board.
We have great news for you: those days are over. Today, design engineers not only have powerful computers to help us work smarter and faster, we can use simulation tools to analyze our work as we go. Isn’t living in the future fantastic?