If the Postal Service were about 13 percent inefficient, there would be zero net scale benefit.
The postal service won't have any net scale benefit if and when they are around, two numbers short of, 15 percent inefficient.
At 13 percent inefficiency, the postal service has 100 percent net scale benefit.
A dog is in water.
The Clean Air Act Amendments (CAAA) Costs and Benefits: Advisory Council.
The people are wearing athletic shorts.
The girls are enjoying themselves.
A  child is getting a bath.
What doesn't affect intervention?