Validity and soundness are one of the most important terms in logic. How to distinguish between deductively valid and invalid arguments as well as between sound and unsound arguments? The definition is very much straightforward and it is all that is needed to grasp the idea. However, this post will also give you a brief description of a few examples which will provide you with a more practical approach to the problem. And at the end of the post I will reveal to you a little secret which will turn this logical issue into a piece of cake!
Valid argument means an argument whose conclusion cannot be false if its premises are true. Consider the following example:
