Rationale for $!

Hello,

	What is the purpose of having $! in Perl 6?

	The global variables in Perl 5 are a constant headache, prompting us to 
need to local()ize variables like $@, $!, and $? to avoid unforeseen 
consequences like RT #127386 and those documented in Try::Tiny’s POD.

	Perl 6 seems to give us both the “right” and the “wrong” solution to 
accessing exception variables: we get $_ within a CATCH block (right), 
but we also get that global $!--which, to me, seems pathologically wrong.

	The need to access the exception outside of a catch() block is not 
nonexistent, but why this $! syntactic sugar rather than just expecting 
people to do like: http://perl6maven.com/how-to-catch-an-exception-in-perl6

	Thank you!

-Felipe Gasper
Houston, TX