Campaign Events?

Has anyone done a study of the effect of the campaign events. Some of them are self-explainatory like Archimedes_Hand screw: Archimedes becomes a anchilliary and likewise stoic philosophy.
Earthquakes, plagues and unrest also has a direct observable effect.
But what about the great library at Alexandria?
In the descr_events.txt file the text is parsed meaning that the event is dependant on a specific date, but the builiding of something just like the Marian reform - or am I wrong?
What about the invention of clear glass by the Carthagenians extra trade bonuses or....

Cheers Ras.

i allways thought they were just interesting historical tidbits lol. if anyone knows exactly whats going on with them please post a replay as i am also very keen to find out.