I don 't think they have any bias towards people who want them to be their best friend. They just do their bidding and live off their care while they are waiting for the right moment to betray them.
Thornton explained the NYPL automatically purchases licenses for a given title if there are more than five patrons waiting for it - creating a systematic approach to a user-curated collection.
As a child I often waited for my dad to return from the vineyards, and followed him to his workshop filled with saws, welders' masks, and nails sorted by size.