Dec 15 2022 07:39 PM
Some of the changes that you make might surprise you, either by not giving the answer that you thought they would, or by calculating more slowly than you expected. Therefore, you should time and test each change, as follows:
Time the formula that you want to change by using the RangeTimer macro.
Make the change.
Time the changed formula by using the RangeTimer macro.
Check that the changed formula still gives the correct answer.