The Doctor and Ace in “Remembrance of the Daleks”

What do you make of that?

Ace

It's a playground.

The burn marks. See them? Well?

Ace

A landing pattern for some kind of spacecraft, isn't it?

Very good.

Ace

But this is Earth, 1963. Well someone would've noticed, I'd have heard about it!

Do you remember the Zygon gambit with the Loch Ness monster? Or the Yetis in the underground?

Ace

The what?

Your species has the most amazing capacity for self-deception, matched only by its ingenuity when trying to destroy itself.