[Tutor] WRITING XLS FROM OS.WALK()

[Alan Gauld]

"Steven D'Aprano" <steve at pearwood.info> wrote

> The specialist replied "The bill is $10 for my time, and $490 for 
> knowing which was the right tool to use."

Interesting modern variant on the version I heard....

A man's washing machine broke down so he called the plumber. 
The plumber looks at it for a few minutes then takes a hammer 
out of his toolkit. He gently taps a fixing and the machine starts 
working. He presents a bill for $50. The man is shocked, you 
only tapped it with a hammer how can you justify that? 
The plumber amends the bill: $1 for hitting with hammer, 
$49 for knowing where to hit, and how hard.

Alan G.