Do you find it necessary to be confrontational in all instances?
Scientists theorize based on what they know. A Theory based on speculation is, at best, called a hypothesis, if even so much as that.
At least, that is what scientists on this thread have been insisting for years until they self-exiled themselves to the icy confines of DC.
a hypothesis is a guess that leads to an experiment. a theory is the process of giving overall meaning to the data collected from experiments. a theory is an educated guess.
sometimes theories are wrong.