I recently learned about this from one of my favourite German podcasts: https://freakshow.fm/fs286-zurueck-zur-vision https://freakshow.fm/fs286-zurueck-zur-vis

I recently learned about this from one of my favourite German podcasts: https://freakshow.fm/fs286-zurueck-zur-vision https://freakshow.fm/fs286-zurueck-zur-vision (Starting at 2:50h)