I look at it as it may not be possible for someone to answer all your questions because it is not their car. When I see this in an ad I that it what it means to me so I get prepared to have them make a list of the questions they might not know so they can get back to me after they talk with the owner...
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
