Why open up the window-shades before landing?
On commercial airlines, I've noticed that the flight attendants always ask everyone to open up their window shades before landing or take-off.
I've always wondered why this is. Is it something to do with the mechanics of the plane? Is it some kind of passenger-comfort thing?
I can't imagine what difference this act makes, but the attendants seemed really insistent on it. :)
Now there is a question about cross site duplicates on Meta Stack Overflow, but it's a question that (kind of at least) fits on all 3 sites, being being relatively narrow, meaning that it's unlikely that there's going to be much more added to the topic. In this specific instance, what should we do with the question?