Why are candy wrappers SO LOUD?

Plastic wrapping of candy traditionally is made of cellophane - which is a semi-synthetic regenerated cellulose based polymer made from wood pulp via the viscose process (cellulose xanthogenate as intermediary). Easily one of the smelliest and least environmentally friendly industrial processes I can imagine (from 1890 or so). read more

Plastic wrappers make noise when crumpled because of those creases and ridges you see on it. Unlike very elastic materials like rubber sheets, when you stretch a plastic sheet, the stress doesn't get distributed evenly. Treated plastics have metastable energy minima. (Like a ball rolling down a hill that has many small ridges and valleys. read more

However, this sucks as a parent who on more than one occasion has tried to sneak eat a candy without alerting my toddler. The same toddler who apparently can't hear me call his name when it's dinner, clean up or bath time, but can hear a candy wrapper from 3 rooms away. read more