Online, ongoing experiment which you can take part in, which apparently proves the existence of retropsychokinesis (the mind influencing events in the past!). There are many possible explanations - psychokinesis, ESP, a fraud, or something else.

A testable theory of psi making specific predictions, an Observation Theory compatible with Schmidt's Model but with a specific retro causal feedback mechanism. Presents single particle interference and electron orbitals as temporal interference.