In other words, you must show that a man is wrong before you start explaining why he is wrong. The modern method is to assume without discussion that he is wrong and then distract his attention from this (the only real issue) by busily explaining how he became to be so silly. In the course of the last fifteen years I have found this vice so common that I have had to invent a name for it. I call it “Bulverism.” Some day I am going the write the biography of its imaginary inventor, Ezekiel Bulver, whose destiny was determined at the age of five when he heard his mother say to his father – who had been maintaining that two sides of a triangle were together greater than the third – “Oh, you say that because you are a man.” “At that moment,” E. Bulver assures us, “there flashed across my opening mind the great truth that refutation is no necessary part of argument. Assume your opponent is wrong, and then explain his error, and the world will be at your feet. Attempt to prove that he is wrong or (worse still) try to find out whether he is wrong or right, and the national dynamism of our age will thrust you to the wall.” That is how Bulver became one of the makers of the Twentieth Century.
In the post linked above, we mainly discussed “explaining how he came to be so silly” in terms of motivations. But Ezekiel Bulver has a still more insidious way of explaining people’s mistakes. Here is his explanation of the mistakes of Descartes (fictional, of course, like the rest of Bulver’s life):
Descartes was obsessed with proving the immortality of the soul and the existence of God. This is clear enough from his own statements regarding the purpose of the Meditations. This is why he makes, “I think, therefore I am,” the fundamental principle of his entire system. And he derives everything from this single principle.
Someone who derives everything from such a thought, of course, is almost sure to be wrong about everything, since not much can actually follow from that thought, and in any case it is fundamentally misguided to derive conclusions about the world from our ideas about knowledge, rather than deriving conclusions about knowledge from our knowledge of the world.
While Bulver includes here a reference to a motive, namely the desire to prove the immortality of the soul and the existence of God, his main argument is that Descartes is mistaken due to the flawed order of his argument.
As I suggested above, this is even more insidious than the imputation of motives. As I pointed out in the original discussion of Bulverism, having a motive for a belief does not exclude the possibility of having an argument, nor does it exclude the possibility the argument is a strong one, nor does it exclude the possibility that one’s belief is true. But in the case under consideration, Bulver is not giving a cause rather than a reason; he is saying that Descartes has reasons, but that they are necessarily flawed ones, because they do not respect the natural order of knowing. The basic principle is the same: assume that a man is wrong, and then explain how he got to be wrong. The process appears more reasonable insofar as reasons are imputed to the person, but they are more exclusive of the person’s real reasons, while motives do not exclude any reasons.
As we have seen, Bulver is mistaken about Descartes. Descartes does not actually suppose that he derives his knowledge of the world from his knowledge of thought, even if he organizes his book that way.