I am mentoring someone who is where I was three years ago (although I've never used Wyeast, so the "smack pack" stuff is all his).
Him (accompanied by picture of carboy): why hasn't my beer started fermenting yet?
Me: (among other questions) did you make a starter?
Him: I smacked the smack pack.
Me: next time, make a starter.
Him (a few hours later, new picture, this time with krausen): look, it finally started, 12 hours later!
Me: next time, make a starter.
Him: thanks for your help! I love brewing!
Me: next time, make a starter.