First to put forth an argument, truth must have absoluteness and immutability, and does not exist in reality. Then, according to whether it does exist in reality to distinguish different definition domains, all the knowledge is divided into three parts: natural science (materialism), metaphysics (idealism) and mathematics. The contents contained in the metaphysics can be called as the truths, which have existed only in order to the existence of the natural science. The characteristic of the truths is that they cannot be proved by empirical methods, and can only be gradually approached by repeated practices. The principle of seeking limits in mathematics was abstracted from the physical processes of ascertaining the truths. And mathematics runs throughout both of the natural science and metaphysics, it has helped us to break through the bondage of finite thought by the way of infinite subdivision, from the quantitative change in real space has gone deep into the qualitative change of ideal realm. It not only has achieved the unity of opposites of all the knowledge, but can also make reasoning under the premise of mutual restriction according to have the characteristic of continuity. As a result, metaphysics has been translated into that neither divorced from practices, nor just observed objective things with a one-sided, isolated and static way of thinking. This is precisely where the bright spot of the article lies. Between the truths, which can only be reasoned through the continuity of objective things in reality, and can produce logical causalities, but cannot deduce out any contradictory state, nor can there be any chronological order. For example, a rational explanation is firstly given for the disagreement of "whether matter is the first or consciousness is the first." The philosophical question of "which came the first, chicken or egg", is explained in passing. In addition, it was also found that in Einstein's special relativity there was a paradoxes, which was to use one truth (the principle of constant light velocity in vacuum) to overthrow another truth (the absoluteness of simultaneity). After inspection, it is determined that the value c of light speed in vacuum has been replaced with the value v of real light speed. Here lay Einstein's mistake precisely. At last, his "principle of relativity" has been modified rationally.
Influence of the specialty of respondents on the effect of using chewing gum when solving a mathematical test
