Rory Sutherland

It's not manipulation.

Be careful of that.

Because, no, no, no.

I think we've got to be really careful here.

One thing might be that a genuine cold-blooded psychopath would intentionally...

Now, I might find it difficult.

This is a Jeffrey Miller theory that if you're on a first date, there's an element where apparently it's a long time.

I've been married for 30 something years.

But women on a first date will turn up a bit late or do something a little bit annoying.

And Miller's theory is that it's a psychopath detection test.

Interesting.

So, you know, one of the worst things that can happen to women is to get into a relationship with someone who's psychopathic because you end up with an empty bank account and, you know, your sister's pregnant by everybody.

Everything goes hopelessly wrong.

Someone who's written very interestingly about this, by the way, is a fabulous woman who writes about education and is absolutely brilliant.

I'll remember her name in a second.

But she's written quite about this, having a psychopath in the family.

Likewise, Kevin Dutton has also written about this, about his own father.

There are certain things which you can do which make it very likely that psychopaths will out themselves.

So the perfect test might be you bribe the waiter to tip soup on them.

And they'll lose it.