Last but not least, there is the problem of evaluating sources.

Models that incorporate and evaluate sources of heterogeneity are available.

These people constantly find and evaluate new sources of information, and they recognize that no single outlet is perfect.

In a perfect world, where everyone can critically evaluate sources of information and achieve reasonable conclusions that might be true.

In fact, as the new medium matures, many Internet news junkies are quickly learning to shoulder some of the old journalist's job of evaluating sources.

Then, hopefully, with the aid of a good teacher it will provide a chastening experience on the importance of evaluating sources.

Empiricism evaluates sources by considering the observations (or sensations) on which they are based.

Pragmatism evaluate sources on the basis of how their values and usefulness to accomplish certain outcomes.

Libraries sometimes provide advices on how their users may evaluate sources.

Both foodstuffs are usually served at a reception afterwards, offering debaters and listeners an opportunity to evaluate primary sources.