That depends what happened.
Speculative knowledge refers to knowledge that is based on speculation or hypotheses rather than concrete evidence or facts. It often involves making educated guesses or predictions about the unknown based on existing information or theories. Speculative knowledge can be useful for generating new ideas and hypotheses, but it may also be less reliable than knowledge derived from verifiable evidence.
Your mom happened!
the place where the incident happened
Laconia incident happened in 1942.
Shishou incident happened in 2009.
Kattegat incident happened in 1963.
Jinan Incident happened in 1932.
Kyōtoku Incident happened in 1454.
Kyūjō Incident happened in 1945.
Rhamu Incident happened in 1977.
March Incident happened in 1931.
Baledrokadroka incident happened in 2006.