What things make a source non-credible?

There are many factors that can make a source non-credible. For example, if the source has only popped out yesterday and it will not provide sources as to how it has gotten the conclusion or the “fact” that it is spreading to other people, this source can become a bit problematic.

A non-credible source may also be written by authors with questionable reputations. For example, one author may be known to be biased so no one can actually tell if the person would be able to state the truth through the things that he will say. There may also be unbelievable or obviously incorrect information that will be displayed by non-credible sources without any proof.