In my opinion, I think science and teachology brings a lot of benefits to people. Like computer, long ago people must send letters for family or friends by post office but now with it we can send letter by email.That's very convenient,isn't it? Morever,it also helps people find imformation from Google, mustn't to go anywhere.Besides, computer will helps people relaxing after a long tired day with many types of videos which are entertainment. Or with smart phones,we can phone or chat with our family or friends although they're far from our place. But we shouldn't depend too much on teachology because we may become lazier or harmful for your eyes. So we must use science and teachology effectively,especially in the present time,which is very development.