1. Remarks or statements based on conjecture, hypothesis, or incomplete information rather than proven facts
The scientist made speculative observations about the origins of the universe.
O cientista fez observações especulativas sobre as origens do universo.
2. Theoretical or tentative comments made without sufficient evidence or verification
These are merely speculative observations; we need empirical data to confirm the theory.
Estas são meramente observações especulativas; precisamos de dados empíricos para confirmar a teoria.