Knowledge and the Senses

What do you make of empiricism's claim that all of our knowledge is based on the use of our senses? What areas of knowledge do you think support this theory? Are there any types of knowledge (mathematical knowledge, for example?) that you think are a problem for this theory?

For the most part, I believe the empiricists' claim that all of our knowledge is based on our senses. I say this because, when you are born, the only tools you have to exist and function in this world is entirely based on your senses. I cannot imagine an existence where someone is born with no senses at all: no sight, smell, touch, taste, and hearing. how can you know anything if you have no senses? You may be aware of yourself but how could you "know" anything at all? Even when we observe animals, we can see that their knowledge is based on senses as well. However, I think animals are possibly born with innate ideas which I would relate to "instinct". I think some areas of knowledge that would support the idea of knowledge based on experience would be Biology, some areas of Psychology, or even Anthropology. The areas of study that relate to the human race and its evolution.

I think most of the scientific areas of study would have a problem with the empiricists' view of knowledge, especially in the present time. There are hundreds, if not thousands, of scientific instruments that allow us to "see" or "hear" experiences that we cannot experience based on our natural senses. We would never have been able to see most of the galaxies and stars without Infrared Imaging or Ultraviolet telescopes. We would not have been able to see microscopic worlds without the use of microscopes. This opened up worlds of knowledge that we wouldn't have been able to experience without those tools.