Originally Posted By: Orac
What they won't tolerate is denial of knowledge or observations or insistance a theory is right without overwhelming evidence and observation.

Exactly. That should be the criterion, otherwise it will not be science. However, any speculative theory, whether it is teleportation or time travel or any alternative theory should be discussed in an open science forum. Only based on the result of a discussion, you can arrive at any conclusion regarding whether there is any evidence. Arguing ones part should not be taken as 'insistance'.