14
votes
1answer
359 views

Why didn't the Persians make and use ballistas and other kinds of artillery?

In 1980 E.P.Thompson published an interesting paper called *Barbarian Invaders and Roman Collaborators *. Among other subjects he consdiers there the leakage from Rome to its enemies of technical ...
38
votes
7answers
1k views

History of scientific regression

Throughout history, humans have made many subtle and many substantial scientific advancements. Humans have explored, examined, learned, applied and at times seemingly "forgotten" and/or were unable ...
36
votes
2answers
911 views

How accurate or supported is Jared Diamond's “Guns, Germs, and Steel”?

Jared Diamond wrote a fascinating book that purports to explain, in a very broad way, the development of civilization. It has several explanations for the development of Eurasian civilization rather ...