Comments by "Agnelo Mascarenhas" (@agnelomascarenhas8990) on "IBM Technology" channel.

  1. Zillion questions about intelligence. Where does Shannon's information fit in or Chomsky's language hierarchy. How does this fit with search space of algorithms. Also worth understanding how genetic information grew sequentially mainly by mutations, but there were other rare mechanisms like fusing. Capabilities also arose out of social behavior at the cellular, tissue and organism level.
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  2. A transparent glass sheet has light grazing glass-air interface internally by total internal reflection. When you write on the surface, the internal light gets scattered off the ink and into the air. Best contrast is when you are perpendicular to the glass sheet and that's where the camera is installed on the other side of the writer. To create a blackboard type experience, the video is mirrored left-right or vertical axis.
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  3. He writes on a glass sheet. There are lights along the edge of sheet. Light travels within glass due to total internal reflection at glass air interface and the glass appears dark to viewer. When ink appears on surface, the light is scattered out of the glass and the ink is visible. Camera faces the writer on the opposite side and the writing would appear to us right to left, so video is mirrored along vertical axis so text is readable as usual.
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