so science can be wrong regardless of how many people believe whatever theory is being postulated at the time.
Yes. Science is always tentative.
and it can boil down to being a matter of which sources you choose to believe, especially in the fields of physics, archeology and astronomy to name a few. take the field of physics for example, string theory vs loop quantum gravity.
No. That's false. You don't get to pick and chose your facts in science and you don't get to chose some sources and ignore others (otherwise, you end up looking like Deepak Choopra, or Michael Behe in Kitzmiller v. Dover). String theory and loop gravity are theoretical frameworks, not properly graduated theories.
You do know there is a difference between the popular usage of the word 'theory' and the scientific definition 'theory', don't you?
psychology is the one field i find to be the most subjective of all fields. yet, people readily jump on one bandwagon theory flavor of the month after another. it's no wonder people are messed up in the skull.
"People" =/= science. Just because popular opinion about particular psychological theories oscilates and people have subjective interpretations of those theories, doesn't mean that the science is incorrect.