[EvanAnderson]

Came here to say this, too.

I think at least a 100-level knowledge of account is beneficial to nearly every developer. Bookkeeping is, arguably, one of the oldest and longest-practiced "data processing" disciplines. It seems arbitrary and somewhat old-fashioned until you grok the reasoning and history behind it (double-entry sourced from summaries of various different "journals" to facilitate separation of duties, closing periods and rolling-up detail entries into totals because human computational power is limited, an equation that balances implicitly when there aren't entry errors, etc.)

From a personal finance perspective I think everyone should get some training in account but, sadly, that's probably way too optimistic of an attitude.