The Uncertainty Principle
Movie| Title | O Princípio da Incerteza |
| User score | 4.9 |
| Release date | May 17, 2002 |
| Genre | Drama |
| Director | Manoel de Oliveira |
| Production country | France, Portugal |
| Production companies | RTP, Madragoa Filmes, Gemini Films |
| Run time | 133 min. |
Having lost her place among the social elite, a widow remarries and starts a family.
