Expense depends upon the amount of auditing done in response and auditing time can get very expensive fast if you go deep enough. Especially when you go combina

Expense depends upon the amount of auditing done in response and auditing time can get very expensive fast if you go deep enough. Especially when you go combinatorial with interactions. There also isn't a neat threshold of when it starts to become "overkill". If it was for knocking a hole in a non-structural wall they can safely call it overkill somewhere between "replacing the entire wall" and "replacing the entire building".