“…As the "onion skin" metaphor vividly reveals, unwilling doubters continue to reset the gap and find new mysteries such as comprehension [18,23], intentionality [31], consciousness [25], incalculability and quantum uncertainty [25]. However, scientists are getting more and more clear knowledge about these subjects, the simulation of them is becoming more and more possible, and the gaps have been retreating repeatedly, and have become something in the picture again and again.…”