To my knowledge, most of it from antiquity was lost. Whish is what Ibn Khaldun was speaking about, not the scholarship for the Islamic period.
To clarify, I did mean the pre-Islamic Persians, but it looks like you're right. There is evidence of engineering achievements but a lot was lost.
To my knowledge, most of it from antiquity was lost. Whish is what Ibn Khaldun was speaking about, not the scholarship for the Islamic period.
To clarify, I did mean the pre-Islamic Persians, but it looks like you're right. There is evidence of engineering achievements but a lot was lost.