5. Doubt, opinion, certainty
1. Doubt and opinion
True knowledge that we have can be of three kinds: we can doubt it, we can think about it as probable, and we can be certain of it to be real and be sure of its truth. These three states of mind we call: doubt, opinion and certainty.
We are in doubt when we do not know if a determined knowledge is true or false. For instance, I am not sure if it will rain this afternoon or not.
We have an opinion when facing two different possibilities, we are leaning towards one of them as the true one. We have no certainty, but we believe this possibility to be the most probable. For instance: I have seen several times a patient and in my opinion they are improving and will leave the hospital soon.
Future is nearly always debatable, due to the fact that we do not know what will happen after. And so knowledge depending on human will are debatable too. For instance: in the upcoming elections my political party can win or not.
JOHN: I have doubts about almost everything. Little is known about what is shown on TV, whether it is true or false.
MARY: From what it is said on TV we can doubt about what some journalists say, but other things are true, such as news we truly see.
JOHN: You are right. We form our opinion from what we know, but there are other people with an opposite opinion.
MARY: That is why you have to reckon very well what you see on the TV, hear about on the radio and read in the newspapers and notice who has more reason and who less.