In contrast to emotional appeal, argument relies on factual data and logic.
To say that an argument is based on logical reasoning is not to say that the argument is right. Two opponents can argue opposite sides of a complex issue, each using logical reasoning in support of his/her position.
A reader would have to weigh the arguments of both sides in deciding which has made the more persuasive case.
But even if you are reasonable and well prepared, your arguments still may not change the minds of those who have strong psychological, social, political or religious reasons for believing the way they do.
There is little hope of changing the minds of those with an emotional commitment to a different outlook. (smoking, religion, politics)
But among open-minded, reasonable people searching for the truth, there are innumerable ideas open to debate.
The best advice of all is to have a real reason to want to persuade others and to keep that goal in mind as you write.
Argue about a topic you care about and believe in.
Argue because you feel it is important for others to learn the truth.
Without the commitment, argument becomes an empty exercise, offering little prospect for success or satisfaction from it.
Although commitment is important, it is also important to retain an open mind and to be willing to be persuaded yourself when better ideas and new information are presented to you. In other words, don’t be stubborn!!!
It is important to win your readers’ trust through the AUTHORITY of your evidence.
Researching for reliable, credible resources is critical!
Not only can sources supply you with support for your thesis, but they can lend their expert authority to your writing and convince your readers that you have studied the subject carefully enough to be trusted.