[quote=AN]SK and CAR, if that’s your argument, then how do you have data to back up your claim when the things you claim hasn’t happen yet. The boomer haven’t enter retirement, so how can you be sure they will die as early as their parents’ generation? My argument is due to medical advancements today and going forward, boomers will live longer. We won’t know who’s right until 50+ years from now. So I guess we’ll just have to agree to disagree for now, until the last boomer die, then we’ll know who’s right.[/quote]

What is extrapolation?

That’s why it’s called expectancy. Once it is realized it is no longer expectancy (kind of like talking about probability that it rained at specific location yesterday).