| Proposition | Usual logic | Fuzzy logic |
| (ç1): The earth is bigger than the moon | T | T: F = 1:0 |
| (ç2): Socrates is alive | F | T: F = 0:1 |
| (ç3): The moon is big | not proposition | T: F = 0.1:0.9 |
| (ç4): Leonardo Danchi is bald | not proposition | T: F = 0.7:0.3 |
| (ç5): 1 + 1 = 2 | T | T: F = 1:0 |
| … | … | … |