Since my Ph.D. years, I have had opportunities to learn about first-hand international development work from the World Bank and organizations in rural China, urban India, the Dominican Republic, Nepal, South Africa, and Ghana. I would like to thank all the research institutions and organizations which I worked with or visited. I am particularly grateful for the opportunity to observe current situations in slums in India through collaborating with the Society for the Promotion of Area Resource Centres (SPARC) and Anugrah India.