When we acquire more knowledge, could things become more simple? The speaker hold an opposite opinion, that things become more complex and mysterious as we acquire more knowledge. However, in my point of view, the speaker confused essences and surfaces of things. When we know more about one thing, it becomes simpler to us. The reason that it seems more complex is that the essence of the thing is more complex than we thought.
  When people say things becoming mysterious as our knowledge about it increasing, they basically mean two aspacts: firstly, when we know more, we find that there are more things we did not know; and secondly, when we know more, we find that what we thought we have been known are wrong or uncomplete. These reasons make things seem more complex. However, actually, the things are unchangable.The complexity of it after increasing of our knowledge is the same as before. It just because we did not realize its complexity when we know little about it.
  Firstly, when we have more information of something, we can watch it via a wider perspective. one example is related with our ancestors. When primative men watched around, they only saw the small part of the jungle they located in; however, when they detected farther, they found that there is sea out the forest; then, after they sailing over the sea, they suprisingly found that there is another world at the world's another side. But when human's knowledge only confirmed in the tiny part they live in, they thought it is simple, and never try to understand things over the sea. However, the globe is always the same, it never become more complex or mysterious than before. The erason we feel it harder to understand is just because we did not know there are so much things to detect.
  Secondly, when we learn more about a thing, we have more methods to realize things. For example, after people invent microscope, we learn more about a plant's micro-structure. We know about cells, then molecules and atoms, and things even smaller. Thus, when we meet another thing, such as a piece of animal's flesh, we would try to find out whether it has cells, and what the molecules of it looks like. Then, the piece of flesh seems become more complex than simply "food", what we had known before. However, the flesh always make up by cells, molecules and atoms, but before microscope appeared, we did not realize that fact. Our previous knowledge is uncomplete, or even wrong.
  After these discussions, we can find that things in the material world is always the same. They never changed. Given enough time and methods, theoretically we can completely know anything. I concede that things in our mental world--I am not mean things exist objectively in our mental world, such as mechanism of our thought; I mean works that we make up, such as novels, musics, paintings, and so forth--would increase its complexity along our knowledge enhanced. However, they are reflection of the objective world. Thus, when we ultimately know everything of things, our mental world will stop becoming more complex.
  In sum, we can safely conclude from what discussed above, that as our knowledges about things growing, things are never becoming more complex and mysterious. If we have enough time and method, finally everything in the world becomes comprehensible for us.