If you understand how computers work; then you will recognize that ontology-like things and other such metadata will play a central role in accounting, reporting, auditing, and analysis in a digital environment. Properly created ontology-like things and other metadata will supercharge accounting, reporting, auditing, and analysis. Consider this diagram:
(Click image for larger view)
If there is any question in your mind about this, I would encourage you to read the following documents:
Once you see the "magic" working, it will be easy to understand all of this. For now, you can fiddle around with my prototype ontology-like thing and other metadata. Also, here is some additional brainstorming related to these ideas.