So it's not surprising that a fan could do a better job than the real owners of playing the idol fans expect to see.

The Science Club will be demonstrating what happens when sodium is mixed with water.

But you aren't even performing your own magic.

I'd like you to continue serving as an examiner. But you must also participate in the new test you propose. Is that acceptable?

We're going to invite the kids from around the neighborhood and show them how to make sweets and hand them out.

Did you think it was absolutely necessary to give a demonstration?

Would you mind helping me with the demonstration? Are you at all familiar with ward spells?

They say you're the best of the pickpockets. Would you mind demonstrating your dexterity?

But you have heard what Bedlam does to people who cross him? Or you need a demonstration?