Thomas Edison went through thousands of unlikely substances before he came upon the right one for the filament of his electric light bulb. Why have we settled so quickly for the sound of its switch?
Thomas Edison probó miles de sustancias insólitas antes de dar con la adecuada para el filamento de su bombilla eléctrica. ¿Por qué nos hemos conformado tan rápido con el sonido del interruptor que la enciende?