The phrase "sheer number" refers to the total quantity or amount of something. It can be used in a positive or negative context, depending on what is being referred to. For example, if someone says that there has been an increase in crime due to the sheer number of people living in poverty, they mean that the large number of impoverished individuals is contributing to the rise in criminal activity. On the other hand, if someone praises a company for its success because of their sheer number of loyal customers, it means that the high quantity of satisfied clients has led to the business's prosperity. In both cases, "sheer number" refers to the overwhelming amount or magnitude of something.