Ignoring generality is admissible if the system has a signicant superiority over one that is (more) general.
Quoting from Charles Williams's site:
"FastExcel measures Workbook Volatility by comparing the time for a Recalculation to the time for a full calculation, and allows you to measure worksheet volatility by comparing the sheet recalculate time with the sheet full calculate time."
Volatile functions aggravates the volatility score for:
"A Volatile Function in a formula in a cell is always recalculated at each recalculation even if it does not appear to have any changed precedents."
...but Aladin, I am in awe of your knowledge!!