来函敬悉,作为一个数学模型,必须具有一定的广泛性和相对的稳定性。我在第一稿中也涉及到了“两金”问题.而在第二稿中为了简化起见就删去了“两金”,因为不是任何企业,任何贷款都能提取“两金”;提取“两金”是目前的规定,以后是否有改动,不得而知。同时影响利润变动的,不仅是公式中涉及到的一些因素,即使添上一个“两金”,其结果也只能是一个预测数。作为一个“模式”,若涉及未知数过多,考虑过细,还谈什么简捷? Letters to learn that, as a mathematical model, must have a certain degree of universality and relative stability. In the first draft, I also touched on the issue of “two golds.” In the second draft, for the sake of simplification, the “two golds” were deleted because it is not an enterprise and any loan can extract “two golds”; the “ Two gold ”is the current provisions, whether any changes in the future, is unknown. At the same time affect the profit changes, not only some of the factors involved in the formula, even with a “two gold”, the result can only be a prediction. As a “model”, if it involves too many unknowns, consider too small, but also talk about what is simple?