The difference is that you are making a statement that it won’t work. I am saying that it may or may not. Tesla leaves out a lot to save money, so again, why assume that they analyzed data to determine not to add a liner?Right back at you, its extra silly to guestimate an known improvement. And the fact is Tesla's already done this analysis and they deemed no need. And on the topic of damping, Musk has already stated that there is no gain from adding more, there's a cost/benefit analysis there.