Software development is built around quantitative measurements. Measurements such as the time it takes an application to load, the amount of memory used, or the load on the CPU. These measurements are all easy to calculate and are wonderfully quantitative. One of the reasons some organizations tend to discount usability (both in practice and in artifacts like the severity descriptions in bug tracking systems), is an inaccurate view that usability is an amorphous and subjective thing that simply can’t be scientifically quantified and measured. That assumption is incorrect.
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