I believe it was there religion or they didn't like change and thought strength was best for everything.
Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. This model positioned the Sun at the center of the Universe, motionless, with Earth and the other planets orbiting around it in circular paths, modified by epicycles, and at uniform speeds.
The major features of Copernican theory are: Heavenly motions are uniform, eternal, and circular or compounded of several circles (epicycles). The center of the universe is near the Sun. Around the Sun, in order, are Mercury, Venus, the Earth and Moon, Mars, Jupiter, Saturn, and the fixed stars.
Allows calculation of planetary orbital periods around Sun. Allows geometric calculations of planetary distances from Sun. These show nice regularity: more distant planets have longer periods, move slower. Easier to calculate planetary positions than with Ptolemaic model.
I hope this helps!
The duck has no system of defense like a porcupine so their instinct is thus different
Explanation:
A porcupine defends itself from an attacker by keeping its face hidden on the bare ground and keeping its belly down to the ground while shooting up the quills on its back.
The quills are not poisonous but still can kill an assailant.
The duck has no such form of defense so it often has the instinct of hiding and not doing that position.
The duck usually tries to run away from the danger as it has no advantage in standing the ground to defend.
