I don't care if it is called hair-splitting or something different. I
must agree with Bert. I found it interesting but misplaced on beginners.
What you were talking about had nothing to do with the Problem Rob was
asking (and to continue in Bert's words: If you use thisContext tempAt:
you've left the beginner area already). With your first line you
confused even me and I'm little bit reluctant now to be called a
newbie ;)

Writing

{ 'this', 'and', 'that' }

instead of

Array with: 'this and that'

let people like me assume there is some black magic happening. To under-
stand the problem dots instead of commata makes it clearer. So maybe you
can understand that while you are right you can spread uncertainty to
those which aren't that experienced (this includes me as well). And
to some who are that experienced it appears like hair-splitting ;)