People who use 50/50 on a question they have no clue about usually end up
burning a second lifeline on the same question which is worthless.
Therefore save the least useful for last.
The Phone a Friend and Audience Poll lifelines can be wrong but usually
aren't. Trust them when in doubt.
Want to really simulate the experience? Here's an idea. Actually phone a
real friend when you want to use that lifeline! Sure they might think
you're nuts but it'll add some oomph to your game.