http://www.amazon.com/Science-Was-Wrong-Inventions-Impossible/dp/1601631022
we are limited to our accumulative knowledge we've acquired through science. its a great tool, and self-correcting in theory, but not immune to scrutiny and face palms.
have you ever thought about superfluity in design?
The problem is that the argument is often made that if there is any form of FTL, even if, like hyperspace, it involves jumping into another dimension, so therefore there must be time dilation and therefore time travel exists. And yet when pressed for an explanation as to how they know it exists, they smugly shake their heads and say, "It's just so. I'm right and you're wrong."
I remember reading stories about how rocket scientists said we would never be able to get to the moon a mere 20-30 years before we actually went there. There was a theory that people wouldn't be able to survive travelling in vehicles going more than 50 miles an hour because the passengers would suffocate.
The scientific establishment has been proven wrong time and time again. To paraphrase Arthur C. Clarke, "when a scientist says something is possible, they could very well be right. When a scientist says something is impossible, they are most certainly wrong."
Just because we do not understand the how, when and why right now does not mean that we will never understand how certain things will be someday possible.
My comment about dark matter and dark energy is simply that physicists have wedded themselves to more and more elaborate and imaginary extensions to validate current cosmology when the actual observed evidence indicates their theory is, at best, incomplete. The more observations indicate the theory is incorrect, they invent new addendums that seem more and more fanciful and unprovable to justify continue using the theory.
What modern physicists are doing seems to be not all that different to the 19th century theorists who were desperately clinging to aether theory and who were ultimately proven wrong.
I suspect much of modern physics will be proven wrong or at least woefully incomplete when it comes to dark matter, dark energy and the possibilities of FTL travel.