The following is a sentence from The Summing Up by Somerset Maugham.
For my part I do not think I am any better or any worse than most people, but I know that if I set down every action in my life and every thought that has crossed my mind the world would consider me a monster of depravity.
It seems to me that 'set' in the if-clause is in the past-form because the if-clause represents a hypothetical condition. Then I think 'has' should be 'had' for the same reason. Am I wrong?