Using/analysing sources-
Reliability needs to be worked out before usefulness
Reliability- accuracy & truthfulness
Although reliability & usefulness are linked, they are NOT interchangeable. Just because a source is considered unreliable it does not mean it is useful. Ie. Propaganda.
In fact its very unreliability may be what makes it so useful ie. Propaganda could hardly be regarded as reliable information, however it could be considered useful in showing mentality at that time.
3rd person/past tense in writing-
when trying to determine reliability ask yourself-
-&…
