When you’re travelling through India you will notice a lot of people just hanging around. If a lorry stops and needs unloading they’ll lend a hand and earn a few rupees. In service oriented economies such as the U.S. and Japan some of these jobs have been incorporated into the formal economy.
The internet has given my ability to do research a tremendous boost. Nowadays, if you know where to search you can find almost any academic book, journal or article.