The fruit never falls far from the tree. What are the practical results of Islam’s political and cultural ideology?
What is the fruit on the tree? Islam is a complete civilization that rejects every aspect of kafir civilization as being inferior.
Islam’s Golden Age claim is an assertion that Islam is the superior civilization.
The Koran says that Muslims are the best of nations.  How does the best of nations compare at the level of politics, economics, and culture?
Islam claims that the Koran is the perfect book with the perfect political and social doctrine that will make Muslims intellectually superior to kafirs. Remember that the Koran is the perfect recording of the mind of infinitely intelligent god, Allah, so Muslims should be the absolute leader in knowledge and ideas. Islam is the finest, most perfect idea that can exist.
First, a personal question: what Muslim author have you read lately? That is a personal approach and since this book is about objective reasoning, we need objective data.
The United Nations has put together a series of four books that measure Arab society. Now Arabs are a minority of Muslims, but there is little data about Islam as an entire civilization and so the Arabs have to represent all of Islam.
The Arabs are the oldest Muslims and Saudi Arabia can make a claim to being the most perfect Islamic nation. Mohammed was from there, and the Koran makes special claims about the Quraysh tribe and Arabs in general. So the Arabs are not a perfect measure but they are the best measure.
The most popular way to move information today is the Internet. England has about 48% of its population connected to the Internet; while Saudi Arabia has 2% of its population connected to the Internet  . High-income nations have 380 computers per thousand people. Arab nations have 20 computers per thousand people. The world as a whole has 80 per thousand.
But there is not as much need for a Muslim to explore the information on the Internet. “Starting in early childhood, the [Arab] child becomes accustomed to suppressing her or his inquisitive and exploratory tendencies.” 
The education curricula “seem to encourage submission, obedience, subordination and compliance, rather than free critical thinking.”  This lack of critical thinking can be seen in patents.
Over a 20-year period, Saudi Arabia got 171 patents, while South Korea to 16,328 patents.  This is a natural result from the research and development funding.
Sweden spends 3.1% of its GNP on research, while the Arab states spend 0.2%.  Switzerland has 79.9 frequently cited scientific papers per million of citizens. Saudi Arabia has 0.07 frequently cited papers per million of citizens.  What that means is that Saudi Arabia published 1 paper that was frequently cited by others.
The thirst for knowledge can be seen in that in the five-year period from 1970-75 only 330 books were translated per year.
There have been only 1000 books translated into Arabic in the last 1200 years.  That is less than one book per year over the centuries.
As a comparison, Spain translates 10,000 books per year into Spanish. In scientific publications the industrialized nations generate about 6 publications per ten million citizens, while the Arab countries create about 0.1 per ten million citizens. 
Source: Western Front America