Placebo A dummy pill or injection that looks exactly like the real drug, but doesn't contain the drug.

Model A simplified picture of what's physically going on.

Prediction/Hypothesis A specific testable statement, based on a theory, about what will happen in a test situation.

Peer Review Where a scientific report is sent out to peers (other scientists) who examine the data and results, and if they think that the conclusion is reasonable it's published.

Variable A quantity that has the potential to change, e.g. weight, temperature, concentration.

Prediction/Hypothesis A specific testable statement, based on a theory, about what will happen in a test situation

Precise Result A result that is really close to the mean.

Random Error A difference in measurement caused by an unpredictable factor, e.g. human error.

Repeatable Result A Result that can be repeated by the same person using the same method and equipment.

Reproducible Result A result that can be consistently reproduced in an independent experiment.

Valid Conclusion A conclusion that answers the original question.

Accurate Result A result that is really close to the true answer.

Variable A quantity that has the potential to change, e.g. weight, temperature, concentration.

Independent Variable The variable you change in an experiment.

Dependent Variable The variable you measure in an experiment.

Control Group A group in a study that is treated in exactly the same way as the experimental group, apart from the factor you're investigating.

Sample size The number of samples in the investigation, e.g. the number of people in a drug trial

When you gather up all the balls of life that you try to juggle, it is a very difficult thing to try to focus in on taking good care of yourself. But that's why God invented me - so I can come and teach and preach and make people laugh and give them some education so they can start liking themselves better.

If popular medicine gave the people wisdom as well as knowledge, it would be the best protection for scientific and well-trained physicians.

Girls that I use to try to talk to, now they want to talk to me.

A masterpiece does not unfurl its wings immediately. It takes time. It will fly when it is ready.

I remember my mother had this deck of cards that her mother had given her and that she passed on to me. It was a gypsy tarot deck that I used to carry everywhere.

My biggest pet peeve are just girls who go to sports bars who have no intention on caring what teams are playing, like they're looking for just a night out. That drives me more crazy than anything else. Like, don't pretend to be a sports fan.

I have no tattoos at all - it was a huge undertaking for me in the '80s to let my parents know I was piercing my ear when I did 'L.A. Law.'

Any man who can drive safely while kissing a pretty girl is simply not giving the kiss the attention it deserves.

Imagine young people would grow up with the feeling that you have to be a hero to do your human duty. I am afraid nobody would ever help other people, because who is a hero?

There is a devil in every berry of the grape.

Upon the Constitution, upon the pre-existing legal rights of the People, as understood in this country and in England, I have argued that this House is bound to revive the Petition under debate.

If you go too fast you might not notice everything. On the other hand, you don't want to be late.

There's no such thing as soy milk. It's soy juice.

I knew I didn't want to pursue an academic career at all, which, of course, my father would have loved me to have done. I didn't want to go to university. The only other thing I could do was paint, and so I went to art school because they couldn't conceive of how one would be an actor.

You can see how dysfunctional this Congress is.

When I was a young girl, I was so crazy about animals that I wanted to do something associated with them, and I thought of being a vet. But then again, I figured I had to go to medical school, and science wasn't a good subject for me, so I dropped the idea pretty soon and thought maybe I could be a vet's assistant.

America is nation of people striving to make life better for themselves and for their families.

The game of football is something I dearly love, and there's nothing else I'd rather be doing.

I'm not too into fast food, but you know if I was, it would be chicken.

As someone who writes and teaches YA fiction, I spend a lot of time trying to define its character and readership, and I don't think I'm alone - genres are all about boundary drawing, and the YA genre is, in a lot of ways, about carving out boundaries around adolescence, a space for teenagers to do teenage things.

I find the light and work it, work it, work it.

The characters in 'Ray Donovan' are not very articulate - we're the worst Irish family you could ever live next to in L.A.

Certain struggles never end.

Most people think an artist tries to be original, but originality is the last thing that develops in the artist.