If we had a light source on a silicon chip, that was as simple as a transistor, there would not be a processor in the world that didn't use light for communication, at least above some distance.
Intagliata: Still, they all pointed out that silicon chips first reached this level of complexity a long time ago—in the 70s and 80s—and had to overcome many similar challenges to get where they are today.
They fight cyber attacks here, design silicon chips, create new Minecraft experiences, research quantum, build the AI tools of the future, and they keep everything.
Technological innovations such as the water wheel, the plow, the steam engine, electricity or the silicon chip can make a tremendous difference in whether work will be enjoyable or not.
So the point I was making there is that if it was easy to manufacture light sources along with transistors on a silicon chip, they would be everywhere.