More consistent syntax

Perl 5: sigils could "change" based on the operation:

@a = ( 'alice', 'bob', 'carol' );
$first = $a[0];                      # note "$a"

Perl 6: sigils are invariant

@a = ( 'alice', 'bob', 'carol' );
$first = @a[0];                      # note "@a"