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

Success is sweet the sweeter if long delayed and attained through manifold struggles and defeats.

I strongly believe that for the steel prices to be market-driven, without distortions, we need to substantially increase the production capacity.

Life is funny, and that's why I celebrate it in my shows.

The essence of documentary filmmaking is how you manipulate the material to create an emotional impact as opposed to just delivering information.

Once I got married and had kids, I moved away from romantic roles, because it seemed wrong to have my 3-year-old wondering why Daddy was kissing someone else.

You gotta ask 'why' questions. 'Why did you do this?' A 'why' question you can't answer with one word.

I'm basically turning my apartment into an armory.

Eventually you get bored and you want to work.

A culture cannot lie down with dogs and not become utterly infested with fleas. The dogs, in this case, are the mongrel media and the corporate overlords who have grown fat on manufactured controversy and fear mongering.

I think depression creates in me an urgent need to write, but I also believe that daily stress, and even the positive 'stress' of intense happiness, can compel me to express myself through the written word.

That's the heart of it: My shows were not that controversial with the American people. They were controversial with the people who think for the American people.

It will not always be easy, but it will always be beautiful.

Our ultimate goal is that Iran never have a nuclear bomb.

I try to not eat as much sugar, but it's so hard in our American diet to do that... It's hard to completely avoid.

I think of images as an immune system and a transit system.

I'm 40 next year and I'm very well aware that where I am now, it becomes a bit of a wilderness for actresses.

I am in the hands of Deori Maa. Every time I come to Ranchi, I visit her temple. I still remember my first visit.

The choir is not disbanded. We will continue to rehearse and we will continue to honor our contractual obligations because were paid for every performance.

The fairytale has turned into a nightmare.

If you're feeling frumpy or grumpy, try to eat Paleo. It's a way of eating that is sometimes referred to as the 'Caveman Diet.'

Prejudice is a burden that confuses the past, threatens the future and renders the present inaccessible.

All good music, whatever its date, is ageless - as alive and significant today as it was when it was written.

I started out being a stand up and writing my own material. That took me to 'Talk Soup,' where I was writing and performing for TV.

Whoever wants Yesh Atid in the government has to vote for us - there's no other choice.