The importance of the hydrocarbon pool mechanism lies in its ability to explain the high selectivity and efficiency of certain catalytic processes. For instance, in the methanol-to-hydrocarbons (MTH) reaction, the hydrocarbon pool mechanism helps elucidate how methanol can be converted into a mixture of valuable hydrocarbons like gasoline-range fuels and light olefins. Understanding this mechanism is essential for optimizing catalysts and improving industrial processes.