I finished reading the classic Great Expectations last night. Great book, and I will probably come back to it in 10 years to understand and appreciate all the subtle meaning in it.
There is a time when Pip enjoys life as a wealthy gentleman in London, and together with his friend Herbert, lives beyond his means. While consolidating his debts, he would always add a ‘margin’ to the total to be on the safe side. Sure enough, at the end of each month, the total debt would have risen to the accomodate the margin.
Pip says that this habit of adding a margin to everything ultimately became his undoing.
Our errors expand to fill the margins we give ourselves.