Hi,

One thing I’ve not been able to understand from the FE theory is this:

If sunsets were just an illusion, and the sun were not sinking but receeding, then surely it would have to be travelling much faster away from one at the horizon then when overhead? Because the sun casts a shadow that advances quite evenly in the middle of the day, but the lengthening of it accelerates towards evening.

If perspective were the cause of the illusion of sunset, surely one would have to grant that the sun would have to be covering ever greater distances within equal time slots as it ‘receeded’, ie speeding up? If it were travelling at constant speed overhead horizontally, would we not see the sun whizzing by at noon, then appearing to slow down as it receeded, due to perspective? And wouldn’t the length of shadow not change much during evening hours?