Just before this BBC podcast gets underway, here's something you may not know.

My name's Linda Davies and I Commission Podcasts for BBC Sounds.

As you'd expect, at the BBC we make podcasts of the very highest quality featuring the most knowledgeable experts and genuinely engaging voices.

What you may not know is that the BBC makes podcasts about all kinds of things like pop stars,

poltergeist, cricket, and conspiracy theories and that's just a few examples.

If you'd like to discover something a little bit unexpected, find your next podcast over at BBC Sounds.

Thanks for downloading analysis from the BBC.

This week we have a new presenter, the psychologist Nick Chater.

You might have heard him elsewhere on Radio Forum, the psychologist Nick Chater. You might have heard him elsewhere on Radio

Forum, The Human Zoo with Michael Blasland. His program for analysis is called

Precedents or Principles and he begins at his usual cafe.

Oh, medium cappuccino and a chippee round, please.

Would you like chak on top, sir?

Yes, please.

I am alarmingly predictably. Same coffee, same sandwich, same coffee shop. So many of the things I do and I suppose come to think about it.

So many of the things we all do are remarkably constant.

Far in away the best predictor of what someone's going to do in a situation tends to be to look at what they've done previously. I think you

find this within the person so they think back to what they did last time.

But I'm a man of principle. Sure I don't just copy what I've done before.

This chique-pey ramp, for example.

Why did I choose that?

Well, for one thing, I don't it meet.

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