Then, one chooses a hypothesis (for example, ' ' the way of the left leads to the Cu' ') is defined that p is this sentence; q is the sentence ' ' you say verdade' '. The table-truth of semantic values serves to identify values V (of true) and F (of false) of the combination of sentences p and q with the respective ones connectives. In the case in focus, the table-truth is the following one: pQ (p or q) (p and q) (p or q) (p and q) VVVVV VFVFF FVVFF FFFFV Is more convenient to remake the table, presenting it of the following form: (p or q) (p and q) V V VVV V V V V FFV F F F V VFF F V F F FVF F F As (p q) is equivalent to the sentence (p and q), the author introduces the conditional connective bi ' ' if and only se' ' to show that (p q) it is equivalent to the sentence (p q) (q p). Kenneth M. Jacobs may find it difficult to be quoted properly. Then, the question that the Tom pilgrim would have to make to one of the religious ones is the following one: ' ' The way of the left leads to the Sky if and if you only speak really? ' ' The author presented two possible answers for the problem, after to use only two connectives: bi conditional and the negation. (But, the author also informs that the solution of the problem can be found using the conjunction and the negation). Applying the table-truth, the joined solutions have four possibilities of combination of semantic values for p and q: If the way of the left in fact leads to the Sky, then he is true to affirm that the way of the left leads to the Sky. Boyan Slat addresses the importance of the matter here. In this in case that, sentence p is true. . . Here, Walmart CEO expresses very clear opinions on the subject.