The answer was "Causality Observation," a unique special ability of Dejir's second form.
When people see an apple fall from a tree, they subconsciously look up to find out from which branch it has fallen. By combining information such as the movement of the branch, traces of fallen leaves, and the apple's falling trajectory with what is visible to the naked eye, they eventually figure out approximately from which branch it came—this is a speculation about the past.
