Why do older Lojban texts (before 1993) not make much sense sometimes?
Lojban has been quite stable since 1992-3, when the last significant changes were made (since then, most “changes” have been additions to the language which did not make older text invalid). The last changes to the gismu list were made in 1992, and in 1993 the rafsi list was modified to optimize for actual usage of the rafsi in Lojban word-making. There is a translation table from the older rafsi to the final set.
