Is fear holding you back from trying something new? Inventor Simone Giertz says you should do it anyway — and fail. In her TED Talk, demonstrates some of her “useless robots” — like a toothbrush helmet and a wacky alarm clock — and explains how letting go of the need for success gave her the space to learn and have fun along the way. “As soon as I removed all pressure and expectations from myself, that pressure quickly got replaced by enthusiasm — and it allowed me to just play,” she says.