What is Francis Bacon's "bilateral cipher," and how does it work, and how is that different from a "substitution cipher"? 2. Why does this cipher mean that "anything can signify anything"? 3. What types of elements could be used to produce letters and words in this cipher? 4. How does the bilateral cipher relate to modern computers? 5. Think of some cipher elements and spell your initials with them using those elements in a way that hides the fact that it is a code.