1. Why isn't the learning-curve concept as applicable in a high-volume assembly line as it is in most other human activities?

2. What are the elements that can disrupt the learning curve?

3. Explain the concept of the doubling effect in learning curves.

4. What techniques can a firm use to move to a steeper learning curve?
Susan Sherer, an IRS auditor, took 45 minutes to process her first tax return. The IRS uses an 85% learning curve. How long will the:
a) 2nd return take?
b) 4th return take?
c) 8th return take?