Measure once, cut twice ?

The carpenter's credo is "Measure twice, cut once."

I have just learned why it's not "Measure twice, then two weeks later when your in your dad's garage, grab the circular saw, cut once , then take the wood back home on the train and find out you'd forgotten those bothersome little fractions that come after the numbers you remembered."

While I pouted over my newly painted shelves that are 1/4 inch shorter than their cabinet, Lily wedged some matchbooks into the little gaps.

Stable? Enough so. And ghetto enough to match the rest of our home!

Now nobody breathe...