There are a lot of people who embrace this position, which I call Undergraduate relativism. This is the position stated in many of the papers I received from my students, and it’s basically a cop-out to enable the student to not have to think carefully about difficult questions. It is not however, the only alternative to the belief that there is a single objective truth. A third alternative, called Pragmatism, is America’s greatest philosophical achievement. Pragmatism claims that there is a continuum connecting "true" and "false" theories. Some theories are better than others, but that does not require us to say one theory is true and all the others are false.

We make sense out of the world by making theoretical posits about items we cannot directly see, such as atoms or diseases or three dimensional objects.

Because of these posits, we are able to make successful predictions about our worlds. When we do this wisely, when we make a good choice of posits, we end up making fewer errors than if we make a bad choice. But no choice has ever produced a theory that enabled those who accepted it to make no errors whatsoever. If that ever happens, such a theory would be The Truth, and all other theories would be illusions. But in the real world, the only choice we have is between theories whose acceptance leads to varying amounts of errors