I've never understood people who refer to the period when Muslims indulged in science, inventions and etc as "Islam's golden age" Surely the golden age of Islam was when Hadhrat Muhammad Al-Mustafa (sallahu alayhi wasallam) and his Sahaba (ra) were alive? Also Muslims should stop dwelling on the past in terms of inventions, it's time for us to try a better the Islamic world in this age.