this may be a dumb question, but why is the $e in catch ($e) explicitly needed?

use Syntax::Keyword::Try;
 
sub foo {
   try {
      attempt_a_thing();
      return "success";
   }
   catch ($e) {
      warn "It failed - $e";
      return "failure";
   }
}
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To avoid reusing/redefining a special variable like Try::Tiny does with $_ ?

We already have $@

Or is there another reason I'm not aware of?