The normal balance in an asset account is a debit. Its also the normal balance for an expense account. The normal balance for a liability and owners equity accounts is a credit. Credit is the normal balance for revenues as well. This seems odd. Assets $($economic resources$)$ & expenses $($outflows incurred to generate revenues$)$ have the same normal balance and so do liabilities $($amounts owed or creditor claims$)$and revenues $($increases in equity from business transactions$).$ It seems contradictory. Why is that the way things are done?