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1Documenting preliminary research will improve both the probability of an answer and the quality of the answer(s)– MCW ♦Commented Jun 22 at 16:08
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5The people who built the pyramids had even less sophisticated tools. The people who built Notre Dame didn’t have 19th century tools. Arguing that your grandparents were idiots isn’t very convincing.– Jon CusterCommented Jun 22 at 16:25
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2What you need to research is cranes. Here for instance is a pic from 1868 showing one in place on Cologne Cathedral since the 15th century. The same method of 'building your way up' has been in place for centuries.– justCalCommented Jun 22 at 18:08
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1@justCal Good find, but I'm more than a little confused about why they would be using a 15th century crane in 1868?– A. LuggCommented Jun 22 at 19:18
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1Still in place from earlier construction.– justCalCommented Jun 22 at 19:41
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