How the tower of world's tallest building was erected?

Ateneo Innovation and Entrepreneurship "New ideas create more and better new products and services; create more wealth."

I saw at Discovery channel two night ago how the world's tallest building was constructed at Dhubai. They encountered a lot of problems, but each time the Engineers came up with  brilliant solution.  The toughest problem was how to erect the l00 ft pylon at the top of the building.   The pylon could not be erected by crane:   there was no crane capable of erecting at that level, and the helicopter could not be steady enough to hold the crane in place for erection because of the high winds.

Their solution?  To erect the tower from within the building.

They cut the pylon into three sections which could be bolted.  The three sections were jacked up and bolted.  

After the erection was completed, the workers and the engineers clapped at their own ingenuity and achievement.

Amazing!