science moves forward,they say,not so much through the insights of great men of gennius as because of more ordinary things like improved techniques and tools.

參考答案:

要點：本句中not so much through the insights of great men of gennius as連接狀語，意思是“與其說...不如說...”。they say可以放在句首，放在句首是主謂結構，放在此處是插入語，造成句子的，翻譯時按主謂結構譯出。

譯文：他們說，科學的發展與其說源于天才偉人的真知灼見，不如說源于改進了的技術和工具等更為普遍的東西。