I can be a person whose motives you cannot fathom. I am a question that keeps scientists awake at night. I am an intricate mechanism designed to lock you out. I am the tangled knot in a detective's mind. I exist whenever logic stumbles, yet I am conquered by strict geometry or reason. If you understand me, I cease to exist.

Where dreams softly land, in comfort they nest, A cushioned field, where each night takes rest. Cradles weary bones through each starry night.

Born from steel or broken wire, I often grow into a fire.

I have arms, but I can’t hug. I have a back, but I can’t move. You sit on me when you want to relax. What am I?

I'm useful at home or out by the sea, And if you need something carried, you might choose me, At home I help with a mop when you're cleaning by hand, At the beach I can help you move water or sand, But if someone says they've kicked me, that's quite the trick, They're not playing with me, they've died real quick.