Since my first attempt turned out to have already been done to a degree, I had a quick brainstorm and this is what I came up with.
A cassette tape and case. On the cassette are embossed the words "Teach Yourself -", with a space for a small peelable sticker, an unspecified number of which are contained in the case.
If someone were to write [JAPANESE] on a sticker, attach it to the cassette and play it, they would hear a 'listen and repeat'-style series of lessons in the Japanese language. The contents would be tailored to their needs or learning ability and, should they reach the end of the tape, continue on the other side ad infinitum until the person had utterly mastered the language.
Writing "Teach Yourself - [JAPAN]" however, would result in a lengthy and exact account of the history and culture of Japan. Any attempts to digitise, copy or erase the tape's contents would be met with either failure or [EXPUNGED].
Experiment logs would eventually lead into testing for other, more abstract concepts such as [SCIENCE] or [CONFIDENCE], eventually leading to a suitably worrisome [DATA EXPUNGED].
Thoughts?