Distilled from my post on the recent similar thread:
"What can we do different to try and prevent the next young or older individual from this happening again?" Full time, paid trailhead stewards at the major trailheads for human interaction. Over and over it has been shown that people (especially today, vs. say 40 years ago) do NOT pay any attention to signs, online warnings, weather forecasts, etc.. But human contact seems to reach a lot of the people who ignore everything else. But it seems that the "land managers" just don't want to pay for this."
Yes, I know, I'm a broken record. But this has helped in the Adirondacks, to the tiny extent that it has been tried. I have spoken with volunteers who have had success "reaching" hikers who did not listen to anything else, but actually listened to the real human at the trailhead. Not "regulatory" or "police power" but little common sense things like "Do you have a light" "Oh, gee, no." and then they go back to their car and get a light before they head out. Or "You don't really want to do this hike in sandals" and then they go back to their car and change from sandals to sneakers. This is success, and it can save lives.
It's amazingly stupid to me that a method that has been tried a tiny bit, and seems to work to some extent, is not being employed on a much wider scale. For God's sake, this has not been tried on a wide scale, let's find out if it helps. Or maybe we would rather just keep on increasing SAR funds to pluck bodies off the hillside.