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

Happiness lies in the consciousness we have of it and by no means in the way the future keeps its promises.

Anything you're trying to will is focused on the future; it's always associated with some sort of anxiety that makes the present moment somewhat uncomfortable.

Running away from the problem only increases the distance from the solution.

I'm just a storyteller.

I don't have a single complete show or movie or anything else that I could look at and say, "Nailed that one." But endless dissatisfaction is, I suppose, what gets us out of bed in the morning.

It's too late for preparation when opportunity strikes.

I feel happy to terrify kids.

Coming early is not as good as coming just at the right moment.

I don't have any issues with my age.

We opposed unlimited detention without trial. We stood up for trial by jury as well. And of course we spoke up for asylum seekers and for the most vulnerable in our society.

Your barber always knows everything that goes on in the town, doesn't he?

We should laugh before being happy, for fear of dying without having laughed.

Idleness is an appendix to nobility.

Nothing is as real as a dream. The world can change around you, but your dream will not. Responsibilities need not erase it. Duties need not obscure it. Because the dream is within you, no one can take it away.

The actions and emotional responses of others are not your responsibility. You cannot rescue people from themselves. This is for them to do.

A grandmother is a little bit parent a little bit teacher and a little bit best friend.

I still sing because I love the sound of applause, because it's who I am, and because I still can.

If you're fighting with your boyfriend, you can go to the movies and cry it out and leave happy because the ending of the film is happy.

I know a little bit about motorcycles and motorcycle riding.

An idea is salvation by imagination.

The worst possible turn can not be programmed. It is caused by coincidence.

Jason Sudeikis is always chewing gum.

In Britain, the major public holiday used to be Guy Fawkes Day... that was celebrated on November 5th with things like bonfires and fireworks... I think that made Halloween seem preferable. The idea of having pumpkins and costumes and parties seemed much more appealing than burning down your neighborhood.

Regretting the moments I took for granted, / Moments when I was eaten by pride and hatred. / What if I had told you what I feel? / Would it change my life's wheel?