Yeah and I’m sure that’s the end of the story. There’s no additional context to this story. Times and the problems faces by the government on that side of the wall were incredibly simple and there definitely wasn’t any collusion on the other side of the wall to try to drive people to leave.
The logical first step to brain drain is definitely to build a wall. those damn commies just didn’t understand how to use logic!
You can also tell by looking at the glass. If you look at an edge, you should be able to see the color of the glass and it will either see yellow or a blue.
Yellow is soda glass, blue is borosilicate.
Also, the superfest glass still exists, but is not used for the same applications. A variation of it is used in the production of glass used in electronics such as phones and tablets. Its not every brand, but I believe Gorilla glass uses a similar procedure.