The hinge of history is a hypothetical time in human history in which humanity has disproportionate influence over the long-term future. The hinge of history hypothesis is the view that we are currently living at the hinge of history (MacAskill 2019; MacAskill 2021).

Whether the hinge of history hypothesis is true may determine how the present generation ought to prioritize between causes or choose between giving and investing, and may have other important implications.