[Ratboy]

About 130 years ago, you could send a telegram from New York to Paris using the cable installed by the Compagnie Francaise du Telegragraphe de Paris a New York.  Installing a cable between New York and Paris requires ordering the cable.  The first question the salesman would have asked is "how much cable do you need?"  They linked the two cities with a continuous cable and so they know the distance exactly. 

I think I will stop trying to engage in debate here, because the only replies I get are from Round Earthers.  It would be nice to hear from FEs that have explanations for my posts.

[Dr David Thork]

On a flat earth, the distance between Paris and New York is way shorter than on a round one.

Someone made a killing selling all the scrap wire left over having invoiced for a round earth. Follow the money. 

[StinkyOne]

On a flat earth, the distance between Paris and New York is way shorter than on a round one.

Someone made a killing selling all the scrap wire left over having invoiced for a round earth. Follow the money. 

Still making bogus claims? I thought you would dial it back after yesterday. Please show us on a FE map where Paris and New York are.

[Dr David Thork]

On a flat earth, the distance between Paris and New York is way shorter than on a round one.

Someone made a killing selling all the scrap wire left over having invoiced for a round earth. Follow the money. 

Still making bogus claims? I thought you would dial it back after yesterday. Please show us on a FE map where Paris and New York are.

Even you would agree that northern hemisphere locations are closer on a flat earth. What is wrong with you? Don't you like been corrected when you are wrong?

[TomInAustin]

On a flat earth, the distance between Paris and New York is way shorter than on a round one.

Someone made a killing selling all the scrap wire left over having invoiced for a round earth. Follow the money. 

Still making bogus claims? I thought you would dial it back after yesterday. Please show us on a FE map where Paris and New York are.

Even you would agree that northern hemisphere locations are closer on a flat earth. What is wrong with you? Don't you like been corrected when you are wrong?

Show us the map so we can see for ourselves.  You made the claims, the burden of proof is on you.

[StinkyOne]

On a flat earth, the distance between Paris and New York is way shorter than on a round one.

Someone made a killing selling all the scrap wire left over having invoiced for a round earth. Follow the money. 

Still making bogus claims? I thought you would dial it back after yesterday. Please show us on a FE map where Paris and New York are.

Even you would agree that northern hemisphere locations are closer on a flat earth. What is wrong with you? Don't you like been corrected when you are wrong?

You are using a RE map. Please show us the locations of these cities on the FE map. According to Tom Bishop - the distance between these cities is unknown.

[Dr David Thork]

I have done the maths for this before on this forum. You know the longitude, you know the lat of both places, you know the circumference of a flat earth, its trig. I'm off to spend xmas with my family. See you after the holidays.

[Ratboy]

With or without a map, the length of cable between them is the distance.  Whether the earth is flat or round the length of cable between them measures how far it is. The person who bought the cable knows how long it is.  I am not trying to state that this shows either round or square earth or flat earth, just that it disproves the concept that we do not know the distance.  We do.
Or rather someone does and I could google it to find out if I really wanted to know the number, I am content knowing that someone knows and they would complain if the amount of cable they bought was short because they trusted the round earth map.  Ships out at sea laying cable hate it if they get 90% of the way and then run out because the length was based on an inaccurate map.

[Tom Bishop]

How, exactly, do you know whether the cable came up short or in excess?

[douglips]

How, exactly, do you know whether the cable came up short or in excess?

Maybe the first cable came up a bit short or long, but since there were many cables laid before 1900, eventually they would have figured out how to order the right amount of cable:

"Additional cables were laid between Foilhommerum and Heart's Content in 1873, 1874, 1880, and 1894."
https://en.wikipedia.org/wiki/Transatlantic_telegraph_cable

[Ratboy]

Tom, Since they sent telegrams I know they got the right amount and as douglips mentioned, if it was not right the first time, it probably was the second time, or third. 
360 networks was the name of a company that went bankrupt in the past few decades laying a fibre optic cable across the Atlantic.  The shareholders were watching it intently and were very upset that the money ran out.  They did not have a huge amount of fibre optic cable left over suggesting that they guessed wrong at the distance they had to lay the cable.  If the ships were laying cable and the distances were totally wrong at 1/4 the way or 1/2 way there would have been law suits springing up at that time.  Maybe Trump is right and all our news is fake and the only reliable source is this site, but we probably should believe something about something.

[StinkyOne]

How, exactly, do you know whether the cable came up short or in excess?

Because that stuff isn't free. Economic forces would require getting the amount of cable right. Where is your proof they got the amounts wrong??? Just because you make a claim to cover your hypothesis, doesn't mean it is based in any sort of reality.

[Ratboy]

I have to side with Tom that it is a valid question.  How do I know they got the right amount of cable?  I do not on that first one and my assumption that their initial estimate of the distance was correct is not supported by any evidence.  However, they did not change the maps to reflect any change based on the length of cable required to cover that estimated distance, so it is now pretty much known.  I once heard way back in the 80's that if they were to send a missile half way around the world, they did not know the exact location of any building to within something like 100 feet. 100 feet for precision bombing might be material, but not important compared to the size of the earth.  I know how far it is drive to my sister's house, 214 miles.  She knows how far it is to drive to her in-laws, 387 miles.  People know how far they have to drive from somewhere to somewhere.  Therefore to fly there is the same distance.  They can figure out how fast planes can fly because they can drive there as well much of the time. One could argue that planes fly faster or slower over open water of the ocean than they do over lakes.  But with all the information available to calibrate, 150 year old transatlantic cables, long distance cross country skiers in the arctic, driving in cars, laying railroad tracks, satellite TV (do we believe these work?), using smart watches to calculate what club to use on the golf course, at some point we have to just accept that things really are where we think they are.