The book or audiobook wheel is for a very specific stall: you want to read the thing, you have access to both versions, and you have not begun because you cannot decide which version counts as beginning. A month goes by like that. The title stays on the list, the sample stays unplayed, and the choice you keep postponing is far smaller than the delay it is causing.
Reading gives you the page. You can go back a paragraph without hunting for it, mark a line you want later, and move faster than most narrators speak. Listening gives you the hours you already spend walking, driving, and washing up, which is time the paper version will never reach. Neither is the serious one. They suit different books, and most readers end up doing both.
The spin exists to end the postponing, not to rank the formats. Watch what you feel when it lands, because relief at the audiobook usually means your reading time is genuinely gone this month, and that is worth knowing. Both entries have an even chance, drawn with your browser's cryptographically secure random generator, and either result lets you start within the hour.