This is the short edition of More or Less, first broadcast on the BBC World Service.

Hello and welcome to More or Less on the BBC World Service.

I'm Wesley Stevenson.

This week, what makes a good incentive?

Let's start with something that happened in a snooker match this week that had fans fuming.

It was an incident that caused the head of the sport to brand the behavior of one of the world's best players

unacceptable and disrespectful.

Snuka for the uninitiated is a bit like Paul, but with a much larger table and a much slower game,

and you get different points for the different coloured balls.

Ronio Sullivan is one of the world's great. At this week's Welsh

Open he was playing true to form and he was on course for a 147, the maximum

score in a frame of snooker and a reasonably rare achievement, even for Ronnie.

He's managed just 13 in his 25 year career.

So in this one particular game, he'd reached 80 and the way the balls lay he was in a good

position to clear the table. To keep himself on course he needed to pot the highest

scoring ball the black.

This is when he paused.

Spoke to the referee and asked what the prize money was for a 147.

Ten thousand pounds or fourteen thousand dollars he was told.

At this he turned away from the black

and potted the pink ending his chances of a 147. But why did he throw it away?

I knew it was 10 grand I thought you know it's too cheap. Let's be bothered about the 10 gram.

...