But from the perspective of being a commonly and currently used format, something with which most people are familiar, and know how to access, it doesn't work at all. The book was published in the 1980s, and, as I say, even by the time I came to it in the 1990s, microfilm was a pretty niche format.

Oh yes, definitely! I just like the unexpectedness of something we think of as being obsolete actually being more likely to be useful in the future!