In Germany, for a hat-trick to be considered genuine, all three goals must be scored in the same half, and without any other goals interrupting yours. It's known as a 'lupenreiner', which translates roughly as 'pure', but that's slightly different from a 'perfect hat-trick'. A perfect hat-trick requires one goal with the right foot, one with the left foot, and one with the head. This showcases the player's versatility and skill in football.
Aristotle viewed the universe as a set of celestial spheres, with the stars in the outermost perfect, incorrupt, and immutable sphere, providing a sense of constancy amidst Earth's changes. Galileo's discoveries challenged the notion of perfection, revealing imperfections and different centers of the cosmos.