on minutiae

Did I really just spend my entire night doing homework from a workbook?

Did I really just spend my entire night doing homework from a workbook, that isn't for a grade?

Did I really just spend my entire night doing homework from a workbook, that isn't for a grade, for a one-hour class?

And did I do all that at the expense of reading for another class in which (I've heard) an 8 on the final is passing?

Gack.