It seems those are slides for a live presentation, so I guess you might also complain about the lack of sound or about how pointless it is to post slides on the

It seems those are slides for a live presentation, so I guess you might also complain about the lack of sound or about how pointless it is to post slides on the internet. Or you might make a constructive comment. Or no comment at all. Still I was curious to find out what "doen't work" means in the context of your comment. I tried on my Nexus 4 and everything was nice. So maybe you should complain about how a slack the original author is to not try his intended-for-a-live-presentation slides on all possible devices a careful reader like you could see them.