Excellent points, Potatoes.
Like you, I use TT for consistency and thoroughness. I always check the numbers and the calculations, and go line by line in every form just to make sure I understand what it has done and I agree with it. Never do I "assume" it's done the right thing. There is absolutely no way I could do all these worksheets and forms on my own, and be complete and consistent, but I'll be smacked if I'll just fly blind and let it work on its own!!
As for SQA, your points are all valid... at some point, you just can't account for someone who fat fingers data at the brokerage house... in this case, at least it was something easily spotted, understood, and ultimately corrected.
