Consider the following LSAT-esque logical reasoning question: Hal: Bitcoin mining today uses a lot of electricity, because there are a great deal of mining machines that use the energy to secure the network. Finney: The primary sources of U.S. electricity generation are natural gas and coal. Globally, the sources of electricity are more skewed towards coal than natural gas. Elizabeth: Natural gas is bad for the environment because it is mostly methane, which is a strong greenhouse gas. The em...