But there's something even more fundamental.
All models are wrong.
Some are useful. For specific details concerning the announcement, see Dassault Systemes Signs Agreement to Acquire SRAC . At least, that's the objective. Whether you're designing trailer hitches, industrial equipment or the wings of an airplane, the purpose of analysis and simulation software is to predict performance. And, in an ideal world, these tools are reliable, accurate, easily integrated with existing design software and hardware, and are perhaps, most importantly, cost-justifiable.