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RE: Understanding Cognition: The Dissonance Of Flat Earth
Well, if one does not want to believe in simple Newtonian physics, I see no reason to believe in relativistic physics. Hence speed of light is no problem, and the energy requirement can also be ignored for the same reason.
Even within the relativistic point of view, maintaining such an acceleration is unproblematic - it's a question of reference frames. If someone falls off the edge of the pancake, they will see the pancake accelerate with 9.8 m/s^2, but as the speed between the man-over-pancake and the pancake gets a significant fraction of c, the MOP will see the acceleration of the pancake decrease. The speed of the pancake will grow towards c in an asymptotic way, never reaching c.
This is a great devil's advocate argument by the way!
So @tobixen I would say that when you made this statement, you were 100% correct:
So therefore we can disprove the constantly accelerating disk earth with . . .
aeroplanes!!!
If the earth is constantly accelerating, then every plane that took off would come crashing down to earth as soon as it stopped accelerating and hit cruising speed. Because as you rightly pointed out, (or at least alluded to) the only way to stay at a constant height above the ground in the accelerating pancake model would be to keep accelerating yourself.
Ergo planes would not work unless they were continually accelerating upwards, and landing would be problematic to say the least. :-)
I think even the most logic-deprived flat earther would have problems getting out of that one without using the words; 'because magic.'
Cg
Sorry. As far as I can see, the only difference between the "accelerating pancake"-theory and the "gravitational planet pull"-theory is that the actual g experienced by the airplane at cruising altitude would be a tiny bit less than the actual g experienced on ground. Except for that, both theories are compatible with airplanes flying. The thing that keeps the plane from falling down is aerodynamic lift.
Though, what I do wonder about in the accelerating pancake theory is ... what is keeping the air in place? It should spill over the edges and fall of the pancake as the pancake is accelerating.