Time span...

An american born Desi returned to India and hired a tourist cab for sight seeing. When taken to the Taj Mahal in Agra, he asked how many years it took to build it.
The guide replied 20 years. The American desi remarked You guys are lazy, in America we can build some thing like this in 5 years.
At Red Fort in Dehli he asked the same question. The guide reduced the period to impress him and said Ten years.
Only ten years The American Desi retorted: Did not I say you guys are slow workers! In America we could have built it in 2 1/2 years.
Same story everywhere. He admired the places but reduced the period to 1/4th.
The guide got irritated by this young American Desi. Next day when they were near Qutab Minar the American Desi asked what is that tower? The guide replied I will have to go and find out. When I was passing by this side last evening there was nothing here.