I'm curious about the following behaviour...

"In Playground, first evaluate..."

s := Semaphore new.

[ [ s wait.�� Transcript crShow: 'x' ] whileTrue ] fork.

"then later..."

s signal.

==> 'x' is seen in Transcript

but then an error pops up "#wait was sent to nil"

So...�� 's'�� *was*�� valid and then its not?

cheers -ben