Among scientists working at the cutting edge of particle physics, disagreement is a given. Indeed, defending ideas against the criticism of one's peers is the heart of theoretical science; without the scrutiny of other experts, the challenge of ideas and assumptions to weed out weak ideas, science cannot advance.
Even so, among the brightest lights in the field of quantum mechanics, there are two points on which there is uniform agreement.
The first axiom is that faster-than-light communication is impossible. This was not, of course, always universally accepted. For many decades, the best minds at the finest universities and research laboratories labored over experiments both real and imaginary, employing techniques as diverse as quantum entanglement, gravity waves and tachyon radiation. All of them failed -- in two cases, with spectacularly lethal consequences. As failure followed failure, as the flow of new approaches dried up, the scientific community finally reached concensus. And so, at the end of the day, physicists everywhere go to sleep comfortable in the knowledge that Einstein was right, that energy, matter and information are all constrained by 'c', the speed of light. Truly instantaneous communication is simply impossible.
There is one more principle on which virtually all top-drawer theoreticians agree. Although individual scientists have expressed it in many ways, I choose to quote here the version voiced by Dr. Harlan Mishkin at last winter's Interstellar Broadcasting Symposium in Helsinki: "It is a very, very good thing that nobody ever explained what is possible and what is not possible to Mr. Schlaff's seventh-grade electronics shop class."