Dunno man. Common sense for us in IT is different compared to layman. For example, I thought it was common sense to treat incognito mode only as a shortcut so I wouldn’t have to clear browsing history and local cookies everytime. Then I read about users thinking incognito mode actually protected them against snooping or fingerprinting.

Adding to this, movies with dubs in a specific language (in comparison to widespread tongues like English) might be tricker to find if not impossible decades later.