Genetics Analogy:
“Every kid is different, even siblings. Just because one kid sleeps easy, it doesn’t mean the next one is going to. Both kids are made with the same DNA from Mom and Dad… they’re just put together differently. If you take ground beef, lettuce and tomatoes and put them together one way, you’ve got a hamburger… put them together another way and you’ve got a taco.”

Attenuated Vaccine Analogy:
“The new roto-virus vaccine is attenuated, which means it’s crippled. Your body will still form antibodies and prepare to defend against the real thing. It’s just much easier with the crippled virus. Imagine playing against Tiger Woods. In a regular game, he’ll beat your pants off. But if you cut off his arms, he’s crippled. You’re still playing against Tiger Woods, but he’s crippled and much easier to beat.”