Centuries ago, monks who took a vow of silence developed their own hand signs, with hundreds of gestures, that are still in use today. Plus, how do speakers of different languages distinguish similar shades and tints of colors such as red, yellow...
You don’t really need those little rivets on your blue jeans. Those flat metal disks are leftovers from an earlier time, when jeans had to be much more durable. Such decorative elements that no longer serve a practical purpose are called...