3. Mandela's effect:
A phenomenon where masses of people clearly recall either a specific event in history or the name or spelling of an item as being a particular way, however all public historical records and other people contradict what you remember as being a fact. Over time, a few minor details surrounding significant events, and therefore our perception of these events, might somehow change and may continue to improve in the years ahead. The tried and true spacetime continuum that appears to be the backbone of our collective, three-dimensional, physical reality might have a ripple in it. It also may have produced a sister, parallel universe, which has birthed different scenarios, events, identities, constructs, and relationships.