HELEN BARROW: If you want me to do a quick demo, I will give you three words then, totally without context. Okay? [She mouths three words.]
HZ: Well, it looked like you were saying, “baa, baa, baa,” but that, I assume, is not what you were saying.
HELEN BARROW: That wasn't what I was saying, no.
HZ: What were you saying?
HELEN BARROW: So you've got the right one in that you've got the B. Yeah? So one of them was a B. So if I give you some context then, if I tell you one was a furry animal, one can be a civic leader, and one can be a piece of fruit. Okay, right, I'll do it again. [She mouths the same three words again.]
HZ: …I'm bad at this.
HELEN BARROW: But the thing is, I have deliberately picked three words that I know look alike, because, to go into the technical side of it, consonant confusion group, you know, a set of lip shapes that look alike.

The Guinness world record for typing speed was held by the late Barbara Blackburn. There are two kinds of typing contests: sprints, and marathons. And Barbara was a champion of both: During minute-long speed tests, Barbara could type up to 170 wpm on typewriter or, on a computer, 212 words per minute.

MARTIN AUSTWICK: 212 words per minute

HZ: And in endurance tests she could type 150wpm for 50 minutes.

MARTIN AUSTWICK: 150 words per minute, for 50 minutes

HZ: To show off her world record-breaking achievement, in 1985 Barbara was invited onto the David Letterman show, to race against the fastest typist on Letterman show staff - also called Barbara. But Barbara Blackburn sabotaged the contest.