Deductive Reasoning

The type of reasoning I found most difficult to understand was deductive reasoning. After doing some additional research on the internet, I was able to understand it better. Deductive reasoning is a basic form in valid reasoning in which begins with a general case and deduces specific instances. Deductive reasoning begins with a theory. The truth of the premises is supposed to guarantee the truth of the conclusion; in an inductive argument, the truth of the premises merely makes it probable that the conclusion is true. The argument is valid if  the conclusion doesn’t really follow from the premise .An example would be: All Biologist are smart. Biologist are scientist, therefore scientist are smart. This is an example of deductive reasoning because the theory is made, and the conclusion follows. The basic idea is that if something is true of a class of things in general, this truth applies to all legitimate members of that class is shown in this example.