What is Algorithm? (must see)

If you want to understand practically, what is algorithm? please see the above Video. My sir Dr. Rahul Athale has taught us Algorithm and given this video. It was great experience of my student life. If you are Student, Teacher or learner than you must see this video.

Algorithm is an ordered sequence of unambiguous and well-defined instructions that performs number of steps and ends in finite time 

Please see the video and think what is Algorithm?