When I am awake but have not gotten out of bed. When I am trying to sleep but I can’t. When I am caught in a traffic jam. When I am washing clothes or sweeping the floor. I listen to mp3 lectures/talks. Washing clothes, mopping the floor, or taking an evening walk doesn’t require much thinking. But if my ears are plugged to my mobile phone, it becomes like I am attending a world-class lecture in USA or UK. Many people would travel and spend lots of money to attend lectures. Listening to mp3 talks through my phone has been a very important source of learning for me. I picked up the habit through friends in North Delhi, somewhere in 2007-08. We were a Christian group. We shared the lectures/sermons/talks through pendrive, Bluetooth, emails, or web links. Reading books strain the eyes. But listening to mp3 can be done with the eyes closed. Reading books take time. In lectures, we get to hear in a nutshell the key messages. You can’t take your book to all...