$1\mathrm{.}13$ Section $1\mathrm{.}11$ cites as a pitfall the utilization of a subset of the performance equation as a performance metric. To illustrate this, consider the following two processors. P$1$ has a clock rate of $4GHz,$ average $\frac{C}{P}$I of $0\mathrm{.}9,$ and requires the execution of $5\mathrm{.}0$E$9$ instructions. P$2$ has a clock rate of $3GHz,$ an average CPI of $0\mathrm{.}75,$ and requires the execution of $1\mathrm{.}0$E$9$ instructions.