Screen glare

On the train right up to the City today, I sat backwards (seated south), which I almost never do, and on the second level, which I'm growing quite fond of. I've also
learned to sit on the shadow side, as it's much cooler (temperature-wise, possibly even socially).

What I couldn't figure out, sitting up there, looking down, is how the guy on the sunny, bottom side managed to get any work done with the glare on his screen.