I read a post some time ago that explained how that test came to be - It was created by Ryan Gosling of all people - and it's an incredible story inside an incredible story.

Not sure if this [1] is the post I read back in the day, so I hope it does explain the story correctly (Haven't read this one in particular, just googled for it). Then I thought "May be I picked that from Hacker news" [2] and [3] (May be you should go at these in reverse order)

[1] https://cohost.org/mcc/post/178201-the-baseline-scene [2] https://news.ycombinator.com/item?id=35813595 [3] https://www.denofgeek.com/movies/blade-runner-2049-how-a-key...