The Natural Philosopher wrote:

Andy Burns wrote:

you can't discount a circumference change of 1%.

We dont.

That sort of change is about what one would expect from steel or kevlar
cables.

we seem to have some people saying
"it doesn't happen, but it does happen a bit"

others saying "it does happen but it's insignificant"

others saying "it happens and it's enough to be significant"

is there anyone left saying "it doesn't happen fullstop" ?