Locke asks Walt if he wants to know a secret, we don’t hear what this secret is but my guess is that he told Walt about how he was paralyzed before the plane crash.
Flight Attendant
After the crash how did the flight attendant (Cindy), who was at the front of the plane with Charlie, end up with the ‘Tailies’?
1000 miles off-course
Six hours into the flight the planes radio went out, they turned back to land in Fiji. By the time they hit turbulence they were 1000 miles off course.
Bamboo to you too
How did Jack manage to land in amongst all the bamboo without being impaled?
The Donkey Wheel