What is the Mandela effect?
Somewhere in 2010 a large group of people shared the same memory of Nelson Mandela who died in prison in the 1980’s. They all had the same memory about the news items on television and the newspapers, his funeral and the powerful speech of his wife. According to the memories of these people, riots broke lose in South Africa shortly after his death. Hence the name of this bizarre phenomenon. This effect did not only occur with the death of Nelson Mandela. This happened with other events as well! Large groups of people share the same memories of a parallel reality.
What is Quantum Leaping/jumping?
In short it means consciously choosing a different (parallel) reality. By visualizing you’re in a different reality, you will eventually experience the alternate reality.