I talked to you about the shape and you went off on a tangent about depth & layers etc. the very same layers you questioned in your opening post ironically is what you are questioning me with.
You are so engrossed into that false paradigm model in all of your posts on this thread which I had the misfortune of reading, your incapable of stepping out of it to look at things objectively.
Let me try this once again since we are on the topic of shape/depth etc. let's add curvature to this, the circumference of this earth is given to us at almost 25000 miles, we can apply simple trigonometry on this to draw the following calculations, which is around 8 inch square per mile curvature.
Based on this there are so many objects, mountains, boats etc that should never been seen, some of these objects are visible at over 300 miles, also based on this an airplane would never be able to travel at cruising altitude otherwise it would fly straight out into space.
Don't come to with the garbage that gravity somehow bends that airliner such that no one notices it and that the airplane is not really travelling at cruising altitude, this has been debunked by several pilots, it's fixed at cruising altitude until it lands, this is clearly noticeable by all the passengers.