As is vividly illustrated in the cartoon , the parents of Andy are setting a message to their son by computer , asking him to come downstairs for eating something as his computer crashes again. Simple as the picture is, the meaning behind it is as deep as the ocean. Actually , a great many people admit that they are too addicted to internet so reluctant to communicate with families as well as friends face-to-face. In addition,once indulged in computer, most teenagers will avoid difficulties and challenges in reality. Further more,there is no doubt that electronic communication is one of the most effective tools for connecting us through thousands of kilometers. Accordingly, it is necessary for us to use electronic devices in a reasonable way. After all,they are invented to connect you and me other than set a barrier between us.