[higeorge13]

We should keep in mind that companies and sectors set a different goal for the recommendations. Others prefer to show recommendations on similar items, others from what similar users have purchased/viewed/listened, others on highly-profitable items, others focus on discoverability of new items, etc. And as a result people view recommendations differently based on their personal taste and purpose.

And of course, we should always compare the recommendations with the usual baselines. e.g. i sometimes hate youtube recommendations, but what if the baseline was videos that are trending or are watched by users in my country? I would hate them more.