You remember that show Who Wants to be a Millionaire? With that old guy in the shiny shirts and ties? Regis something. I don't know. I think he died after it was cancelled.
Anyway, if you got in trouble on that show you had the chance to save yourself with a lifeline. You could poll the audience, phone a friend, or eliminate two of your four choices.
Well in knitting we don't have the luxury of a 50/50 when we make a mistake. We could phone a friend or ask some people at the local yarn store how to fix it. But when it comes to lace, most people have no idea what to do when they mess up.
Thankfully we have our own lifeline to save the day!
UPDATE: My wife just told me he's not dead and the show is still on. This is what happens when you don't have a TV.