1. **State the problem:** Evaluate $\log_1 2 + \log_3 8$.\n\n2. **Recall the definition of logarithm:** $\log_a b$ is the exponent to which we raise $a$ to get $b$.\n\n3. **Important rule:** The base of a logarithm must be positive and not equal to 1. Here, the first term is $\log_1 2$, which is undefined because the base is 1.\n\n4. Since $\log_1 2$ is undefined, the entire expression $\log_1 2 + \log_3 8$ is undefined.\n\n**Final answer:** The expression is undefined because $\log_1 2$ is not defined.