An illustration of the Weber–Fechner law. On each side, the lower square contains 10 more dots than the upper one. However the perception is different: On the left side [10 vs 20], the difference between upper and lower square is clearly visible. On the right side [110 vs 120], the two squares look almost the same.
This is exactly what one would expect, since you are adding a smaller fraction of the total population in the second case (i.e. 110/120 > 10/20). If you kept the ratio equal in both cases, then the RHS would also look very different. This would work, up until the point where the dots begin to saturate the medium.
Comments
This is exactly what one would expect, since you are adding a smaller fraction of the total population in the second case (i.e. 110/120 > 10/20). If you kept the ratio equal in both cases, then the RHS would also look very different. This would work, up until the point where the dots begin to saturate the medium.
I also think the illustration is simply wrong and doesn't describe the content of the article at all.