Lynn Korwatch located on top of Telegraph Hill. George F. Sweeney and Theodore F. Baugh were the two individuals to present the idea of a wooden semaphore on top of Telegraph Hill. A semaphore is a system in which one uses two flags or poles and sends signals in an alphabetic code. Sweeney and Baugh expanded their system by placing a signal station on Point Lobos, which is located 20–30 miles from port in San Francisco. The reasoning behind this was that there was high demand from people wanting to know when the ships were arriving at an earlier time so that
Alphabetic principle is also seen as a critical heuristic for learning to spell. Two contrasting philosophies exist with regard to emergent readers learning to associate letters to speech sounds in English. Proponents of phonics argue that this relationship needs to be taught explicitly and to be learned to automaticity, in order to facilitate the rapid word recognition upon which comprehension depends. Others, including advocates of whole-language who hold that reading should be taught holistically, assert that children can naturally intuit the relationship between letters and sounds. Alphabetic principle According to the alphabetic principle, letters and combinations of letters are the symbols used