I've never heard of someone losing an eye! [Armin's not as startled as you'd expect from a young man though. He's seen worse.] But then again people who fail have to go to work else where so maybe...

[Explaining the 3d gear to someone who's got no concept of it is going to be harder though and he thinks about it for a moment longer.] The 3d gear is what we use to fight the titans. It's coiled wire powered by gas that'll carry a man's weight, and we can use that to get high or move fast. And detachable blades as well, so if we break one it's not so bad.