Quote Originally Posted by xld
What was the answer as you read it? Just want to make sure that you do understand as there are very few examples where you need the {...} (and if you do, there really is no need for SP )
Thanks for keeping me humble. I didn't mean to imply that I fully "understand," per se. I only meant that I had apparently overlooked what I presumed to be the answer as to whether wrapping a SP equation in {} is required. My presumption that the {} are not required was based on the following statement from Part 2:

Quote Originally Posted by xld
In addition, whilst SUMPRODUCT is not array entered, it is an array function in this conditional usage, which means that you cannot use whole columns in the ranges to be tested, you have to use an explicitly limited range. This is where COUNTIF and SUMIF are preferable.
If there are indeed examples of SP in which the {} are needed, then I inappropriately generalized the above statement as being applicable in all uses of SP rather than just in the example where the statement was made. What would be an example where the {} are needed/required?