(13-08-2023, 04:18 PM)Mark Knowles wrote: You are not allowed to view links. Register or Login to view.There do seem to be a lot of schools ...
Yes, here are three universally known examples ( I'm sure there are many more ):
Hoax vs. authentic
Cipher vs. natural language
Gibberish vs. meaning ( here I would classify, beside Gordon Rugg`s Theory, also Timm & Schinner`s Hypothesis ).

