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I live and work here in a third world asian country, which I will not name in order to protect the innocent. I am posting this comment because I think I may have a perspective on Science and Engineering that is different from yours, being as you are, from a wealth country. I have a BS degree in Physics and was intent on getting an MSc and finally a PhD when financial conditions forced me to leave the University and get myself a paying job. I was offered a teaching job in a small private high school near my hometown and I took it because mathematics tells me that I would be able to save more in this job than a higher paying, but higher cost-of-living job in the city. When I took the job, I was still intent on finishing my studies and get that PhD attached to my name. That was ten years ago. Now I am still a teacher, but I also own and operate an internet cafe, a small ice-cream factory and a photocopying center. I have become an entrepreneur and a businessman. I will n...