I choose the window seat because I like to look out the window. I don't shut it unless I'm asked to.

Window seat chooses open or closed.

It never occurred to me that someone in a middle or aisle seat would request the window seat person to close the window shade.

Looking out the window is the only fun part of flying these days.

It's your window, you can do with it what you want.

If you want to control the window shade, pick the window seat.

If you want darkness or quiet so you can sleep on your flight, bring a sleep mask or earplugs.

1. Shades should be open during take off and landing to allow passenger's eyes to adjust to external light levels which can expedite emergency evacuations (pretty sure this is written somewhere).
2. In flight, shades should be subject to the exclusive control of the person sitting directly adjacent to them--if you want to sleep, bring an eye mask.

Do not lick the window.

Do not hit the window.

Do not draw on the window with permanent markers.

Dry erase are fine.

Do not moon, flash, or full monty the ground crew. Baggage gets lost that way. Fueling hoses are misconnected that way.

People should be responsible for their own comfort. Bring your own sleep mask, ear plugs, neck pillow, blanket, or whatever else you need to be comfortable.

I'd never close the window for any reason ... that's my window. I chose that seat so I can look out of it.

Bring an eye mask if the light will keep you awake.

I've partially closed one before when I was by the window to help block some of the light but still allow me to look out. It was also a half-filled plane and I had the whole row. If someone beside me was sleeping or reading and it was too bright I would have closed it fully.

Just be aware of your surroundings and others. Too many people are so deep into their own stuff they don't see others around them or what might help them.

we all have unwritten rules like how far behind someone you stand while you are in line

Do not stand behind someone who's going to fire off the bazooka.

Maybe the person in the aisle wants to look out the window too but couldnt get a window seat.

Ask for another airplane if you see William Shatner (the original Captain Kirk), or John Lithgow in the window seat.

Summary video.

I only keep the window screen closed when it is light outside but the cabin has been dimmed. If the cabin lights are on, the window screen is up.