Is mobile telecommunications permitted without encryption?

You said that Iridium uses AES encryption, although CCC.media claims that even the recipient's location is broadcast in plain text… But now Heise also says that at least e*Cityruf is also available without encryption… It has also been found that ridiculously low safety thresholds are provided for wind power and solar parks… So how hollow…

School?

Is it normal that high school students only have to bake cookies on the AES exam, while vocational school students have to come up with the recipe themselves, serve it with side dishes like you'd find in a five-star hotel, and compare it to a ready-made meal? We have the feeling that our teacher is…