The backpedaling takes Obi-Wan more by surprise than the assumption itself, and he glances at Luke with slightly raised brows. "In this instance, your assumption is entirely correct. Not only would it probably not be safe for you elsewhere - but, let's be frank, where else would you go?" His tone is gentle even as his words are blunt. "You don't know this galaxy. The one you're familiar with is at least 15 years in the future."

"Now," his tone turns brisk and business-like again. "Almost there, I'll help you get settled and go back for--" And that's when Obi-Wan remembers thinking the R2 unit seemed familiar, but had decided it was merely similar to the one he was so used to. "R2-D2?" He hazards the guess, unsure which will upset him more: that it isn't the same droid - or that it is.