Originally Posted by
OldnGrounded
Security and secrecy are different things. And relying on secrecy for security is a fundamentally-flawed idea.
In the days before the Internet, it wasn't as immediately easy to obtain operating instructions, but it certainly wasn't difficult. Finally, it simply isn't realistic to expect this sort of information to be kept out of the public sphere -- and in some countries it would be impossible to make laws or rules to try to do that.
Anyway, I'm pretty old and I don't remember stolen trains and airplanes being a major threat to public safety.
Let me guess, you believe 911 never happened.