\n“Nostalgia is the heart's way of reminding you of something you once loved .... in a scent or in photographs, but no matter how it comes to you it will always have the same bittersweet taste.” — Ranata SuzukiIt's the feeling that makes the hardest of men sniffle like a little boy, or break into a heart-warming smile. You know when that old song suddenly comes up on the radio and sweeps you back to those sweet younger years? It's truly a bittersweet feeling, but one that enables us to travel back in time and have a glimpse of the old emotions. And science says nostalgia makes "life seem more meaningful and death less frightening".And it's not just music and scent, old items like a 70s Bowie and a Macintosh can send us into a frenzy of nostalgia. Here we look at some of the best automatic and folding knives that evoke sweet emotions from the past.\nSlip Joint Knives. Back To Old School\nThese knives were hugely popular in the days of John Wayne. Any strong, independent man who lived by a moral code and didn't always conform to the law would carry one. However, these folding knives fell out of fashion as we unanimously agreed that modern designs were better and safer.Thanks to the strong call of nostalgia, these knives are back. Some brands kept making them despite falling demand. Now, they're on every knife lover's wishlist.Buck SaunterThis slip joint pocket knife from BUCK is like the gentle whiff of mountain misery for the Boomers. It triggers powerful nostalgia that brings back the images of drinking orange soda in shorts. This retro folder comes with a 2.5-inch drop-point steel blade housed within a beautiful carbon fiber handle. The small pocket knife is a refreshing change and makes a great EDC knife for day-to-day use.