Yes, if you add the same quantity to each variable, but often you can add to one of the variables that’s already large more readily than one that’s small—one general reason for this being that, functionally, the process of incrementing one of these variables is more like multiplication by the same constant (such as in psychophysics) than addition of the same constant.
Remember calculus? If you’re multiplying four positive variables, the largest change in the product will come from incrementing the smallest variable.
Yes, if you add the same quantity to each variable, but often you can add to one of the variables that’s already large more readily than one that’s small—one general reason for this being that, functionally, the process of incrementing one of these variables is more like multiplication by the same constant (such as in psychophysics) than addition of the same constant.