Get a t-shirt of "science"blind someone with science (British & Australian)
if you blind someone with science, you confuse them by using technical language that they are not likely to understand. I think he decided to blind us with science because he didn't want us asking any difficult questions.
it's not rocket science

it doesn't take a rocket scientist - if you say that it doesn't take a rocket scientist to understand something, you mean that it is obvious. We're talking basic common sense here - it isn't rocket science
have something down to a science
to be able to manage all the details of doing something very well. We have traffic management at the new stadium down to a science
regards