1. Based on the definition of gross income in IRC Section 61 and related regulations, what is the general presumption regarding the taxability of income realized? 2. Based on the definition of gross income in IRC Section 61, related regulations, and judicial rulings, what are the three criteria for recognizing income? 3. Describe the concept of realization for tax purposes. 4. Compare and contrast realization of income with recognition of income. 7. What issue precipitated the return of capital principle? Explain. 10. Describe in general how the cash method of accounting differs from the accrual method of accounting