The post discusses a groundbreaking technique in edge detection that operates at the speed of light, potentially enabling real-time image processing without additional energy. Users express various thoughts on the implications of integrating classical and neural filters into optical devices, envisioning advances such as a 'magic lens' that could instantaneously classify objects like 'cat' vs. 'hot dog'. There’s enthusiasm about the future of computing involving specialized analog components in various imaging technologies, although skepticism exists regarding the practical economics against general-purpose computing. The article highlights that while the method is intriguing, it lacks a detailed explanation on its implementation, which has sparked some criticism among readers.