my $ss = $old_ss->but(
next_step => $ns,
($alt_step
- ? (alternatives => [
- [ $old_ss->current_hypothesis, $alt_step ],
- @{$old_ss->alternatives}
+ ? (adjustments_made => [
+ [ $self, $old_ss->current_hypothesis ],
+ @{$old_ss->adjustments_made}
])
: ()
),