If $\alpha$, $\beta$, and $\gamma$ are the roots of $x^3 - x - 1 = 0$, compute $\frac{1+\alpha}{1-\alpha} + \frac{1+\beta}{1-\beta} + \frac{1+\gamma}{1-\gamma}$.
1. Let $\alpha, \beta, \gamma$ be the roots of the polynomial equation \(x^3 - x - 1 = 0\).
2. Define \(r = \frac{1+\alpha}{1-\alpha}\), \(s = \frac{1+\beta}{1-\beta}\), and \(t = \frac{1+\gamma}{1-\gamma}\).
3. We need to find the value of \(r + s + t\).
4. Express \(\alpha, \beta, \gamma\) in terms of \(r, s, t\):
   \[
   \alpha = \frac{r-1}{r+1}, \quad \beta = \frac{s-1}{s+1}, \quad \gamma = \frac{t-1}{t+1}
   \]
5. Substitute these expressions into the polynomial equation \(x^3 - x - 1 = 0\):
   \[
   \left(\frac{r-1}{r+1}\right)^3 - \left(\frac{r-1}{r+1}\right) - 1 = 0
   \]
6. Simplify the equation:
   \[
   \left(\frac{r-1}{r+1}\right)^3 = \frac{(r-1)^3}{(r+1)^3}
   \]
   \[
   \left(\frac{r-1}{r+1}\right) = \frac{r-1}{r+1}
   \]
   \[
   \frac{(r-1)^3}{(r+1)^3} - \frac{r-1}{r+1} - 1 = 0
   \]
7. Combine the fractions:
   \[
   \frac{(r-1)^3 - (r-1)(r+1)^2 - (r+1)^3}{(r+1)^3} = 0
   \]
8. Simplify the numerator:
   \[
   (r-1)^3 - (r-1)(r^2 + 2r + 1) - (r+1)^3
   \]
   \[
   = r^3 - 3r^2 + 3r - 1 - (r^3 + r^2 - r - 1) - (r^3 + 3r^2 + 3r + 1)
   \]
   \[
   = r^3 - 3r^2 + 3r - 1 - r^3 - r^2 + r + 1 - r^3 - 3r^2 - 3r - 1
   \]
   \[
   = -r^3 - 7r^2 + r - 1
   \]
9. Therefore, the polynomial equation in terms of \(r\) is:
   \[
   -r^3 - 7r^2 + r - 1 = 0
   \]
10. By Vieta's formulas, the sum of the roots of the polynomial \(-r^3 - 7r^2 + r - 1 = 0\) is given by the coefficient of \(r^2\) divided by the leading coefficient (with a sign change):
    \[
    r + s + t = -\left(\frac{-7}{-1}\right) = -7
    \]

The final answer is \(\boxed{-7}\)