In ancient times, people relied on sorcerers and witch doctors to explain why many natural disasters occurred. Whenever a volcano erupted, or an earthquake occurred, it was often believed that the gods were enraged. Sometimes, many innocent people were terribly sacrificed to appease the gods’ wrath. Appeasing the supernatural forces, which could either wipe out entire villages or grant bountiful crops through natural disasters, was a sacred duty in many ancient societies. Ritual sacrifices were considered necessary for this propitiation and for maintaining a proper reciprocal relationship between humans and the supernaturals. Thankfully, technology can now be used to understand, predict, and explain many of these natural phenomenons, and this ultimately alleviate the loss of lives and commodities.
Communication has evolved over the centuries from signals and pictures to written words and the spoken language. With language, any message, no matter how complex, can be conveyed between people over a limited distance. For many people, communicating with family used to mean sending cards and letters through the mail and getting no response until weeks later. For the past decade, technology has transformed the way people communicate, in part due to the advent of the Internet. Instead of mailing letters, people are writing e-mails and greeting cards that can be sent instantly to one or more recipients. Many people have already gotten rid of their