For some reason, only one ape species ever has non-small breasts. You never get large breasted gorillas, chimpanzees or bonobos even though they share 98% of their DNA with us. What is it about humans that means that that trait was evolutionarily advantageous? It’s obviously a feature with significant disadvantages, so what is the advantage that offsets that for humans in a way that it doesn’t for other great apes?
It can also be used defensively to avoid having the ball get rolling on a real conversation. This is a key defensive use of small talk which can be deployed at occasions such as “Family Gatherings”, “Workplace Water Coolers”, “Sports Events”.
If you know your relative is a conspiracy theorist and will inevitably try to use a gap in the conversation to talk about how the Jews are using their Space Laser to Direct Hurricanes at Lithium Deposits to Remove the Lawful Inhabitants from their Rightful Land… deploy small talk to avoid this.
P.S. Avoid “the weather” as that’s an opening to talk about how the recent hurricane was controlled by Blackrock.