You yourself say....  (Keolu)"Are we supposed to disregard the 2 billion [of 10 billion] that's owed in interest?" So you admit that the construction cost is 8.2 billion. 

8.2 billion for rail construction is NOT a "lie" or an "invention". It's a fact. At this point your saying the 2 billion contingency is "interest" is the lie. This is only time you've indirectly admitted that the cost is 8.2 billion.