There was an article on boston.com (can't find the link) last summer. They were interviewing people in the area (mostly NH) who worked for the US Forest Service, AMC, people who volunteer rescuing people, etc. They were saying that lots of hikers were bringing GPS, cell phones, etc. but forgot to bring their common sense with them. They were hiking up these mountains without the proper gear, no food or water, no concept of the time it takes to get up and down the mountain, and an almost disregard for the effects of weather. It was funny in a way. They made it sound like the hikers packed their gadgets and figured that was all the needed.