One way to understand a science is a known experts and scholars of science
and
We should know how important books written in the science, which is also referred
Science fegh - the fegh written which in that has been compiled books
And the books are still available- has hundred year old history
When eleven centuries ago
Without interruption
fegh teaching centers have been established
Teachers were trained students
The student have been trained other students
Until the present
And is not cut off the relationship Master and Disciples
And that's just in the Muslim world
that science Are vital records tandem and regular thousand years and more,
That hasn't been a pause in between them
وَ جَعَلْنَا مِن بَیْنِ أَیْدِیهِمْ سَدّاً وَمِنْ خَلْفِهِمْ سَدّاً فَأَغْشَیْنَاهُمْ فَهُمْ لَا یُبْصِرُونَ