"Look out your window" isn't proof, it is evidence.
It isn't either proof or evidence of a flat earth since you are a very small speck of a person looking out on a very small part of a very large thing ,......the circumference of the globe. If the earth was flat and you could look out far enough , you would not be able to see the ice ring because it would be obscured by the atmoplane if the distance was very far. You would see a blur in the distance.
On the other hand , if you were on a ship in the middle of the ocean and looked out your Port Hole or window at the horizon you would see proof and evidence that the earth isn't a flat disc but a round globe. You could see the horizon very plainly because the distance to the horizon would only appear to be a few miles away because of the curvature of the earth and it would not be obscured by the atmosphere......assuming it was a clear day. You could only see as far as it is to the horizon.If the earth was flat you could see forever if it wasn't for the problem mentioned in the previous paragraph.
Debating this is really very foolish anyway .
Most sane and intelligent persons know the earth isn't a flat disc but is a round globe.
One does not wish to cast aspersions on the FE's and the FES but one does have ones doubts about their sanity and intelligence.
Hey , Space Cowgirl -
Did you know that I was once was in the Navy ?
Did you know that :
I often looked out the Port hole in our "Radio Room #2 Compartment" on our ship or went out on the open deck and what I posted in the previous paragraph was what I saw with my own eyes.......and binoculars ?
Has any FE ever done that by them self ?