Why is this the answer?

The answer is feather because this clever riddle describes four amazing and different things that a simple feather can do. It uses some very smart word tricks to help you figure out the answer. Let's start with the first part of the riddle: I am the outstretched fingers that seize and hold the wind. A feather is made of a strong spine in the middle with many tiny, thin pieces coming out of it. These pieces, called barbs, spread out like little hands reaching into the air. When a bird is flying, or a single feather is floating, those outstretched fingers catch and push against the air, which we call the wind. This is how the feather helps the bird fly and how it slows down when it falls, letting it seize and hold the wind. Now for the second clue: Wisdom flows from me in other hands. This clue is about writing. A long, long time ago, people did not use the pencils and markers we have today. Instead, they used a special pen called a quill pen, which was made from a large feather. They would dip the sharp tip of the feather into ink and write important letters, powerful laws, and great stories that held all their wisdom. So, the great knowledge of the writer would travel or flow from the feather pen onto the paper. Next, the riddle says, Upon me are sweet dreams dreamt. We all know that feathers are very, very soft. Because they are so cozy and light, people often use feathers to fill or stuff pillows and mattresses. When you lay your head down for a good night's sleep and have those fun, sweet dreams, you are resting right upon a pillow that is full of feathers. Finally, the riddle ends with, my merest touch brings laughter. A feather is so delicate and soft that the smallest, gentlest touch is called a merest touch. If you gently touch or rub someone's skin with a feather, it is a perfect way to tickle them. And what does tickling always cause? It brings a lot of happy, loud laughter. Because all four of these clues point to one object that can float, write, provide rest, and tickle, the answer has to be a feather.