Can you answer the question in blue please

When you don’t understand a concept during the lecture, it’s to flag it in your notes and leave a blank space so you can fill in more

What is implied in this sentence from mark twain's "the £1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.

What does the passage most clearly suggest about kiowa values