Why we ask you not to touch Since we experience the world through our senses, touching may seem as natural as looking, but it has unfortunate consequences for the objects in the house, which are fragile and irreplaceable. No matter how clean your hands may be, human skin carries natural oils and acids that are harmful to the exhibits. Even a single touch can initiate permanent and irreversible chemical reactions that will darken paint, stain wood and marble, damage fabric and corrode metal. To help us preserve the collection for future generations, please do not touch or lean against any of the exhibits. Thank you for your cooperation. ________________________ © Kettle's Yard / Cambridge