Speculation is the assumption of the risk of loss, in return for the uncertain possibility of a reward. Only if one may safely say that a particular position involves no risk may one say, strictly speaking, that such a position represents an "investment." Financial speculation involves the trade, and short-selling of stocks, bond , commodity...
Speculative fiction is a term used as an inclusive descriptor covering a group of fiction genres that speculate about worlds that are unlike the real world in various important ways....
For philosophical usage, see Speculative philosophy and Speculative reason
Speculative reason
Speculative reason or pure reason is theoretical thought , as opposed to practical thought. The distinction between the two goes at least as far back as the ancient Greek Greek philosophy, such as Plato and Aristotle, who distinguished between theory and practice , as well as productive knowledge ....
