Was a pax in second row from screen on which a projector was showing a film.
Yes that's going back a few years.!!
Sun shining through window next to pax in front made movie a non event.
Being very considerate I tapped window seat pax on shoulder and said " Sir, you will be able to see the movie clearly if you pull down the window blind."
Response in broken European English was
" Oh that's alright. I am not watching it."
No blind until he received a stream of vindictive. Cheers from all close by.