[colanderman]

That observation in itself is not a disproof.

(Imagine standing in a room with a bunch of CDs suspended horizontally from the ceiling. From any vantage point you can see some CDs edge-on, some from the top, some from the bottom, etc. But they're all oriented in the same direction.)

[semi-extrinsic]

This situation is trivially detectable though. Simply plot the inclination angle of disc galaxies as a function of azimuth and inclination, if it's like you say, there will be a very clear banded structure.

[tossandturn]

That analogy does not hold up when the CD you are observing from is in the same plane as all the others.

[jl6]

I suspect that in your example you would observe a number of different apparent orientations, but that there would be some types of apparent orientation that could never occur.

[sosuke]

That boggles my mind, do you have any sources I can read to start digging into on this?

Not sure why a question like this would be voted down but my own searches have only turned up articles about galaxies spinning in the same direction.

Someone else commented with some clarification. https://news.ycombinator.com/item?id=16586901

[drdebug]

Ok, my mind is boggled too... Anything we can read on the topic ?

[Retra]

What topic? Basic geometry?