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

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.

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.

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

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

I was kind of bored playing drums in a band. Which was depressing, because playing in the band was kind of a golden ticket.

Encyclopedias are finished. All encyclopedias combined, including the redoubtable Britannica, have already been surpassed by the exercise in groupthink known as Wikipedia.

The idea of the extreme makeover is disturbing.

I've only had success when I'm not trying to. It's that weird thing where if you're trying to impress a girl, you're not going to impress her. But if you aren't trying to impress a girl, you'll probably impress her because you're not trying.

I'm no angel, but I'm no monster, either.

A careful and sympathetic sense of humour can also be a great asset when there is need to get out of difficult situations gracefully.

You never change your life until you step out of your comfort zone; change begins at the end of your comfort zone.

There is nothing like Ruth ever existed in this game of baseball. I remember we were playing the White Sox in Boston in 1919, and he hit a home run off Lefty Williams over the left-field fence in the ninth inning and won the game. It was majestic. It soared.

What doesn't kill us makes us stronger.

Dread lord and cousin, may the almighty preserve your reverence and lordship in long life and good fortune.

I think you have to be really lucky to pick the sort of roles you want to do.

I had a strong propensity, which I still have, to be invisible. In grade school, I'd try to disappear and become formless. I lived in a very imaginary world. I loved poetry and wrote my first novel when I was 9. It was about a little girl and the people she met in the woods.

Feelings are universal, and if an actor's doing his job, I think he's making people sit there, and if it's in a movie or a theatre, going 'Hmm, yeah, I know that... I know that.'

Yes, 'Black Girl/White Girl' might be described as a 'coming-of-age' novel, at least for the survivor Genna. It is also intended as a comment on race relations in America more generally: we are 'roommates' with one another, but how well do we know one another?

Rhythm is the pulse of music.

'Duty' is a refreshingly honest memoir and a moving one. Mr. Gates scrupulously identifies his flaws and mistakes: He waited too long, for example, for the military bureaucracy to fix critical supply issues like the drones needed in Iraq and took three years to replace a dysfunctional command structure in Afghanistan.

War is the cemetery of futures promised.

L.A. has a fantastic car scene and because the climate is so gentle, cars can last forever.

L.A. can make you feel like you've already made it. You're living off 40 dollars a week; it's nice weather. You go outside on your bike; you go to the coffee shop, and everybody is doing nothing. It doesn't leave a lot of room for ambition.

I know I've got a degree. Why does that mean I have to spend my life with intellectuals? I've got a lifesaving certificate but I don't spend my evenings diving for a rubber brick with my pyjamas on.

I was a Political Science major.

I like to watch 'Grey's Anatomy' when I'd doing cardio. But, sometimes I do need good music to get me moving. I like high energy songs by artists like Justin Timberlake and Rihanna.

If the United States is to protect itself from the economic and the political threats created by this excessive dependence, we must reduce our reliance on foreign energy sources and on foreign oil as quickly and as efficiently as possible.

When I joined Small Faces, we occasionally would bump into The Who. And Keith Moon and I became firm pals.