Airplanes flying around the world? (I have done so)

How does a plane fly straight and end up back where it was if the earth is not a sphere? Millions of people have flown around the world on various trips which rely on a spherical world (as the distances between various destinations globally are predictable by this model, and not by a disc model (since things on either ends of a disc will be farther apart).

Seriously though, many people fly straight and end up back where they were. We haven't found an "end" of the disc...... so..... seriously.... how do you reconcile this?

many people fly straight and end up back where they were

I don't suppose you have any citations for this?   

No, it's common knowledge that people fly around the world. Also, I personally have flown to between 2 locations on the globe, through opposite routes. I went from canada to india once through London and the middle east. The other time I went through China. The distances and travel times for these trips only makes sense with a spherical world.

Oh, I have no doubt that people fly around the world. That, however, wasn't your claim.

Well, what you actually should have said is, "millions of people have flown around the disc, and the flight times proved that the earth is flat". 

People may have circumnavigated the globe in their minds, but look out the window at any point on the voyage and all you'll see is a flat plane. All you ever fly over is a flat plane. Nothing at all suggests that it is a sphere.

Nothing in the human experience will ever suggest that we live on a convex surface. Not one thing, and there never will be.

Except space travel, sunsets, weather balloons and a proper done Bedford Level experiment. Also Foucault's Pendulum. I'm sure I'm forgetting a few.

Except space travel, sunsets, weather balloons and a proper done Bedford Level experiment. Also Foucault's Pendulum. I'm sure I'm forgetting a few.

Nothing in the average person's experience suggests we live on a convex surface. Sunsets alone don't suggest it, could be the sun going below the flat earth. Space travel and weather balloons.. meh, they're not in the average human experience. Gotta rely on others for that. Foucault's, only suggests a rotating surface, not convex, and also isn't in the average human experience.

Again, nothing in the human experience suggests we live on a sphere. We have to rely on others to tell us it is so.

edit - i guess the pendulum could suggest a convex surface since it differs with latitude.

Quote from: Rama Set on May 03, 2013, 01:37:05 PM

Except space travel, sunsets, weather balloons and a proper done Bedford Level experiment. Also Foucault's Pendulum. I'm sure I'm forgetting a few.

Nothing in the average person's experience suggests we live on a convex surface.

Moving the goal posts. are we?  Your previous post said "human experience", not "average human experience".

Space travel and weather balloons.. meh, they're not in the average human experience. Gotta rely on others for that. Foucault's, only suggests a rotating surface, not convex, and also isn't in the average human experience.

Since when is an average person's experience the standard  for determining the shape of the earth?

Again, nothing in the human experience suggests we live on a sphere. We have to rely on others to tell us it is so.

Make up your mind, will you?  Are you talking about any human's experience or just an average human's experience?