20 November, 2007
This would be absolutely brilliant. To be in a class where I could participate collectively in giving the professor instant learning feedback would be truly great. Or to teach such a class. To know instantly when the "Eureka!" moment strikes, or when confusion is, would be of great advantage. A colleague of mine laughed at me and told me that the same thing can be done by reading facial expressions. She is stupid.
LEDs are cooler.
I now need to convince someone to try this.