July 3rd, 2017, 05:35 AM  #21 
Senior Member Joined: Jun 2015 From: England Posts: 662 Thanks: 187  So what? It is well known by everybody else that if you repeatedly make the same mesurement on the same test piece with the same equipment you will obtain a range of results. That is why you have been advised to study the statistics of measurement. Following your reasoning that would mean that the physical object being measured is not the same object at each measurement. This is false reasoning. That is why the following conclusions are not justified by the premises. 
July 3rd, 2017, 05:42 AM  #22 
Math Team Joined: May 2013 From: The Astral plane Posts: 1,570 Thanks: 613 Math Focus: Wibbly wobbly timeywimey stuff.  
July 3rd, 2017, 05:43 AM  #23 
Math Team Joined: Jul 2011 From: Texas Posts: 2,624 Thanks: 1305  
July 3rd, 2017, 05:54 AM  #24 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 10,475 Thanks: 693  
July 3rd, 2017, 06:00 AM  #25 
Senior Member Joined: Feb 2016 From: Australia Posts: 1,322 Thanks: 453 Math Focus: Yet to find out.  
July 4th, 2017, 12:01 PM  #26  
Senior Member Joined: Nov 2015 From: Alabama Posts: 140 Thanks: 17 Math Focus: Geometry, Trigonometry, Calculus  Quote:
Jeez.. I can't even imagine putting a ton of work into a thesis for it to fail. Must be tough to get back onto the horse. Interesting story though with a good lesson.  
July 4th, 2017, 12:17 PM  #27 
Math Team Joined: Dec 2013 From: Colombia Posts: 6,940 Thanks: 2266 Math Focus: Mainly analysis and algebra  You are completely ignoring manufacturing tolerances. In other words, your "cylinders" aren't cylinders.

July 4th, 2017, 12:58 PM  #28 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 10,475 Thanks: 693  
July 4th, 2017, 01:39 PM  #29 
Math Team Joined: Dec 2013 From: Colombia Posts: 6,940 Thanks: 2266 Math Focus: Mainly analysis and algebra 
Oh. I thought you were recognising that lumberjack boots are made bigger than slippers because you wear thick socks in them.

July 4th, 2017, 02:24 PM  #30  
Math Team Joined: May 2013 From: The Astral plane Posts: 1,570 Thanks: 613 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
Once I am satisfied I can do the problem correctly I'm going to use a new method (well, new for me anyway) using "background fields." It should give me an answer in a matter of days, whereas before I had to work a solid year on it. Hey, I'm learning. That's all I care about. Dan  

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