The dacite is an extrusive volcanic rock – it was deposited at or near the surface, at standard atmospheric pressure. It’s currently in its pressure happy place. The granodiorite is an intrusive volcanic rock – it crystallized under the enormous pressure of 4,000 to 8,000 feet of overlyin...
Being able to have an objective yardstick makes us confident that we’re doing things right. What you can measure you can improve, right? One tiny thing though – if the thing you’re measuring against is fairly arbitrary, I am not seeing it do much good. Our beloved BMI is such ...