“Looking ahead to future applications of electronics, [de Forest] grew even gloomier. He believed that 'electron physiologists' would eventually be able to monitor and analyze 'thought or brain waves', allowing 'joy and grief to be measured in define, quantitative unit.' Ultimately, he concluded, 'a professor may be able to implant knowledge into the reluctant brains of his 22nd century pupils. What terrifying political possibilities may be lurking there! Let us be thankful that such things are only for posterity, not for us.”