A question on modification of a list via a function invocation

[breamoreboy at gmail.com]

On Saturday, August 19, 2017 at 11:59:41 AM UTC+1, Steve D'Aprano wrote:

> Consider that in my family, one of our most precious heirlooms is the axe of my
> great-great-great grandfather, which we have passed down from eldest son to
> eldest son for generations.
> 
> The axe is now almost 200 years old. Of course, occasionally the handle has
> broken and we've had to replace it, and from time to time the axe head itself
> was so worn out that it had to be replaced, but apart from those repairs the
> axe is the same one that my great-great-great grandfather used almost two
> centuries ago.
> 
> https://plato.stanford.edu/entries/identity-time/
> 
> -- 
> Steve
> “Cheer up,” they said, “things could be worse.” So I cheered up, and sure
> enough, things got worse.

Rather like Trigger's roadsweeping broom https://www.youtube.com/watch?v=s1VNNbSYdt0

Kindest regards.

Mark Lawrence.