Reason

There are two main types of reasoning, these are deductive and inductive reasoning. The first one is based on the logical validity of three premises (A is B. B is C. Then A is C), the second one is based in the gathering of evidence to arrive to a generalization. Both of them are used in our daily lives and both of them are necessary for use to understand the world, but they have several failures. The problem with deductive reasoning is that no matter how logical an argument can be, it could still be false. We can say:

a) Caterpillars have legs.

b) I have legs.

c) Then, I'm a caterpillar.

This argument is logical, but it is not true.

The problem with inductive reasoning, is that no matter how much evidence we gather, there will always be missing evidence. There is always the chance that our generalization is not correct. Also, there is the problem that this reasoning tends to predict something involving the future. For example: We have observed for a 'long' period of time that the sun comes out everyday, then we could assume that it will continue to come out tomorrow and the day after that. But the thing is there is no way to be sure of our predictions until it happens, and so the evidence will never be complete. Finally, there is another problem with inductive reasoning and it is its tendency of causing the creation of stereotypes. Nevertheless, I believe this is the more reliable type of reasoning. We just have to take into account that we will never reach absolute certainty of anything through this method and that we should not make hasty generalizations.