That is deductive reasoning.

This one has no y at all in it.

So Bill must be tall.

But that's not what they're asking us about this.

C, defining mathematical terms to correspond with physical objects.

There's no a priori reason why an H has to go between that W and A.

And then we can see which of these definitions matches it.

Deductive reasoning.

Oh, it's great. Convincing. Mathematical deduction.

Well, this is more of what I had just talked about, inductive reasoning.

So anyway, you have some statements and you deduce other statements that must be true given those.

Although, I do think that deductive reasoning itself is probably more natural than the definition they'll give here.

It says, which of the following best describes deductive reasoning?

No. 1 Critical thinking and problem solving.

And these are fun, because they are kind of these deductive reasoning problems where you just use a couple of simple rules and just fill in the whole thing.

That's the word.

And that's when you're given a couple of examples and you generalize.

And I'm not a huge fan of when they ask essentially definitional questions in math class.

She's an amazing visual thinker.

Wow, wow!

However, in 1809, David Ricardo muddied the waters by arguing that the science of economics should use a different, deductive method.

But we'll do it and hopefully it will help you understand what deductive reasoning is.

at least 37 times.

But the trouble with the philosophers is that they were philosophizing when they should have been science ophizing.

So if you say, OK, if these two statements are true, what can you deduce?

And then globalization is taking place.

Her way of thinking was rational.

Reason

A revolutionary is only as good as his analysis.

(Applause)

You look at art.

Welcome to 10,000 feet.

He has no ability to reason logically at all.

Man alone has the ability to reason.

The problem was that an influential group at Oxford began arguing that because it worked so well in economics, this deductive method ought to be applied to the natural sciences too.

Those are the frontal lobes.

The emperor does not share your optimistic appraisal of the situation.

Oh, that sounds a little pompous, don't you think?

Why's a revolutionary only as good as his or her analysis?

Very briefly, they are

(Laughter)

Another role that I like to take on is that of the performance artist.

I really believe that if you look at the great monuments of culture, they come from people who are able to pay attention, who control their mind.

I had totally lacked this heart in scientific pursuits.

My thoughts to your thoughts.