Untouchable algorithmic integrity? History tracking? Data not easily corruptible by users? Accuracy in decimal amounts past 12 to 14 significant digits, part

Untouchable algorithmic integrity? History tracking? Data not easily corruptible by users? Accuracy in decimal amounts past 12 to 14 significant digits, particularly if fractionals involved? Huge data volumes? Mind-numbing repetitive tasks? Excel for that? No. Code for that? Yes. Agility? Quick checksums? Looking for errors? Ad-hoc analysis? Excel for that? Yes! Code for that? Depends on whether I have to do it again, or if it gets big. Ad-hoc correlations for equality checking? I'll take a FULL OUTER JOIN over criss-crossing cranky VLOOKUP(...)s any day.