[That is such a grin. There's some thought that's made Luke happy and Garrus has no clue what it is, but that's all right. Especially when there are other things he has no clue on, like what Luke is trying to clarify.]

So luck... moves rocks.

[It's not accurate and he knows it. But he's not sure how to ask any questions that won't sound absolutely stupid. He shakes his head.]

I'm sorry. Not following you at all. I mean, yeah. Okay. Luck can come into how you block fire. So that's unfamiliar, but I'll take it. The other... I'm still stuck on the rock. I don't think, or I don't wanna think, that there's a chance gravity's just gonna stop working, and that's what luck implies with floating rocks. I think.