Q: It seems like the usage of the words "trial" and "recalc" have changed between the different versions of RISKOptimizer. How exactly are these words used and why was the definition changed?
A: In version 1.0.2 of RISKOptimizer and earlier, the word "trial" is used to refer to a solution evaluated in the spreadsheet by RISKOptimizer that met all the hard constraints of the model, while the word "recalc" refers to any solution, regardless of the constraints. In version 1.0.3 and later, we changed this definition to be more consistent with standard spreadsheet and optimization terminology. A "trial" is now any solution calculated by RISKOptimizer . In addition, a trial may be "valid" (met all hard constraints) or "invalid" (one or more hard constraints not met). The word "recalc" is now used only to describe the process of recalculating an Excel spreadsheet.