Honestly the only number that 3 really “owns” is 9. 6 is its own thing, 4 takes 12, 15 is clearly 5 territory, 18 & 24 are in the 6 family, 21 is embedded in 7’s lore, 27 only reminds me of 9 and 30 is obviously a 10 multiple.
In Fahrenheit 451, the abolition of reading began with tech companies simplifying books into summaries that you could read in five minutes. Because people no longer engaged with the texts, they forgot how to think. Then came the book-burnings.