What we see and learn is partly determined by the instruments we employ. Relying on the material senses for information, we see a material world and a fleshly man. Extending the capability of those senses by using instruments such as the microscope, telescope, or X-ray machine may give us additional information about the seemingly physical environment but reveals nothing outside that universe itself.
Christian Science shows and demonstrates in healing that there is a reality beyond matter's seeming, a supraphysical reality, a metaphysical reality. This reality —the only one—is beyond the capacity of the physical senses to grasp, regardless of the degree to which those senses are extended by instruments. It is with the metaphysical realm that Christian Science deals primarily, though human sense sees the results of this realm understood as better physical conditions. This is the key to Science's uniqueness and radicalness. The metaphysical teachings of Science, along with its demonstration of healing all ills, echo the instruction and works of Christ Jesus. "Science is absolute and final," Mrs. Eddy writes of her discovery. "It is revolutionary in its very nature; for it upsets all that is not upright. It annuls false evidence, and saith to the five material senses, 'Having eyes ye see not, and ears ye hear not; neither can you understand.' " Miscellaneous Writings, p. 99
Exchanging dependence on physical sense testimony for that which comes to us from spiritual sense, we find Christian Science is not difficult to understand and demonstrate in increasing measure. But while we rest heavily on the carnal senses as conveyers of reality, Science is inevitably difficult to grasp, and we consequently have little basis for its demonstration. However, the necessary exchange of the information of the material senses for spiritual truth can begin now. Therefore our spiritual comprehension and demonstration can blossom now.
