Thanks my fellow Losties for the thoughts re mysteries we MUST have answered. Reading the replies I really hope some change occurs re the Libby issue - I always imagined she had a significant backstory.
Anyway, a couple of other mysteries I'd like answered. . .
1) When Ben confronted Charles Widmore he mentioned he couldn't kill him - why? 2) What was the sickness that led Rousseau to kill her fellow team members 3) How did Radzinsky end up in the Hatch with Kelvin, escaping the purge?