The routes that commercial aircraft take only make sense on a flat Earth

Why does Dubay think airline routes prove the Earth is flat?

Source: http://imers.org/a38

Dubay observes that most airline traffic is via airports in the northern hemisphere are tries to persuade us that consequentially the Earth must be flat because airlines would "obviously" travel the shortest route possible.



  
This proposition relies on ignorance of the Hub and Spoke model that commercial airlines operate in order to maximise the routes that they can offer and their profits.

The ignorance many be Dubay's, or possibly Dubay is relying on the ignorance of his readers to pull the wool over their eyes.

He also goes further by lying that ALL flights route via the northern hemisphere, which of course on a flat Earth they would have to.

What is the Hub model and how does it work?

Airline hubs or hub airports are used by one or more airlines to concentrate passenger traffic and flight operations at a given airport. They serve as transfer (or stop-over) points to get passengers to their final destination.  An airline operates flights from non-hub (spoke) cities to the hub airport, and passengers travelling between spoke cities need to connect through the hub. This creates economies of scale that allow an airline to serve city-pairs that could otherwise not be economically served on a non-stop basis.

Along with the massive reduction in the number of flights that fly between any given destinations, the Hub and Spoke model allow the airlines to have a central base of operations that has its own added benefits:
  • Better resource utilization for airlines. They can use a small number of aircraft and pilots to cover many destinations.
  • More number of flights between any two destinations. This means that its beneficial for airlines since their planes will stay in the air for longer periods of time and its beneficial for passengers as they have more number of flights to choose from.
  • Destinations with higher/lower traffic can be easily monitored and higher or lower capacity flights can be easily assigned to such routes without affecting other routes.
  • The higher the passenger density, the more the economic advantages for the airline.
  • Complicated operations such as cargo sorting, accounting, and passengers switching can be done at a central airport rather than multiple airports.
See: https://en.wikipedia.org/wiki/Airline_hub
See: https://www.quora.com/Why-do-airlines-follow-a-hub-and-spoke-model-For-example-why-do-Emirates-Airways-flights-go-to-Dubai-first-and-then-from-there-go-to-other-destinations


Why are most of the hubs in the northern hemisphere?

The large Hub airports are in the northern hemisphere as evidence by the fact that the top 50 busiest airports in the world are ALL in the northern hemisphere.
Why?
  • 68% of the Earth's land is in the northern hemisphere, so that is where most countries are.
  • 88% of the Earth's population is in the northern hemisphere, so that is where the busiest markets are. 
  • 92% of the Earth's wealth is in the northern hemisphere, so that is where most of the airlines customers are.
  • 47 out of the top 50 airlines are based in the northern hemisphere, so that is where their main or only hub will be located.

The flat Earth has nothing to do with indirect routes

In conclusion, airline routes choosing to fly longer routes via the northern hemisphere has nothing to do with the Earth being flat.  It is just about boring old commercial considerations.






44. Because commercial aircraft do not take the direct route over Antarctica but instead fly via the northern hemisphere the Earth must be flat
“If Earth was a ball, and Antarctica was too cold to fly over, the only logical way to fly from Sydney to Santiago would be a straight shot over the Pacific staying in the Southern hemisphere the entire way. Re-fueling could be done in New Zealand or other Southern hemisphere destinations along the way if absolutely necessary. In actual fact, however, Santiago-Sydney flights go into the Northern hemisphere making stop-overs at LAX and other North American airports before continuing back down to the Southern hemisphere. Such ridiculously wayward detours make no sense on the globe but make perfect sense and form nearly straight lines when shown on a flat Earth map.”
45. Dubay explains airlines' use of routes via hub airports in the northern hemisphere as being the most direct route on a flat Earth
”On a ball-Earth, Johannesburg, South Africa to Perth, Australia should be a straight shot over the Indian Ocean with convenient re-fueling possibilities on Mauritus or Madagascar. In actual practice, however, most Johannesburg to Perth flights curiously stop over either in Dubai, Hong Kong or Malaysia all of which make no sense on the ball, but are completely understandable when mapped on a flat Earth.”
46. Dubay repeats that airlines' use of routes via hub airports in the northern hemisphere as being the most direct route on a flat Earth
“On a ball-Earth Cape Town, South Africa to Buenos Aries, Argentina should be a straight shot over the Atlantic following the same line of latitude across, but instead every flight goes to connecting locations in the Northern hemisphere first, stopping over anywhere from London to Turkey to Dubai. Once again these make absolutely no sense on the globe but are completely understandable options when mapped on a flat Earth.”
47. Dubay caught lying again about certain flight routes not existing/existing
“On a ball-Earth Johannesburg, South Africa to Sao Paolo, Brazil should be a quick straight shot along the 25th Southern latitude, but instead nearly every flight makes a re-fueling stop at the 50th degree North latitude in London first! The only reason such a ridiculous stop-over works in reality is because the Earth is flat.”
48. Dubay lies about all planes between Santiago and Johannesburg travelling via Sengal
“On a ball-Earth Santiago, Chile to Johannesburg, South Africa should be an easy flight all taking place below the Tropic of Capricorn in the Southern hemisphere, yet every listed flight makes a curious re-fueling stop in Senegal near the Tropic of Cancer in the North hemisphere first! When mapped on a flat Earth the reason why is clear to see, however, Senegal is actually directly in a straight-line path half-way between the two.”

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