Slashdot | Pet Bugs?: "VB/VBA uses a commercial method. That used to be my Team Leader's favourite question to ask during an interview: 'What's the difference between scientific rounding and commercial rounding? Which one does VB use?' No one ever got it right while I was at the company. Most programmers didn't know about the two methods at all.

As for your tax example (UK, Canada, US, whatever), the gov't does not need to be accurate on tax forms. They can just raise taxes if they can't balance the budget. ;)

Do you smell that?"