  One popular view is that direct discrimination is wrong because the discriminator treats persons on the basis of traits that are immutable and not under the control of the individual possessing them.  Thus, Kahlenberg asserts that racial discrimination is unjust because race is such an immutable trait (1996: 54–55). And discrimination based on many forms of disability would seem to fit this view. But Boxill rejects the view, arguing that there are instances in which it is justifiable to treat persons based on features that are beyond their control (1992: 12–17). Denying blind people a driver’s license is not an injustice to them.  Moreover, Boxill notes that, if scientists developed a drug that could change a person’s skin color, it would still be unjust to discriminate against people because of their color (1992: 16).  Additionally, a paradigmatic ground of discrimination, a person’s religion, is not an immutable trait, nor are some forms of disability. Thus, there are serious problems with the popular view that direct discrimination is wrong due to the immutable nature of the traits on the basis of which the discriminator treats the persons whom he wrongs.