Decades ago, I took the test for Mensa in front of an administrator who was a psychologist and gave me a "real IQ test". At one point, he took a jigsaw puzzle composed of eight to ten pieces and dropped it in front of me. I was to put the puzzle together as quickly as possible.
I immediately recognized the puzzle as an elephant and quickly pieced them together.
"Good!" he said. "I'll mark that as almost perfect."
It is kind of like a tradition in France to not give perfect scores (20/20) to tests, especially in humanities. The idea is that there is no such thing as a perfect essay, and so, no perfect score.
Perfect scores are much more common in hard science and maths, where it is usually a simple matter of answering correctly to every question, but some teachers are still hesitant and may find some tiny imperfection to justify a "19/20".
I immediately recognized the puzzle as an elephant and quickly pieced them together.
"Good!" he said. "I'll mark that as almost perfect."
"Almost perfect?" I exclaimed.
"Come on. You're not God, " he replied.