What is an Irrebuttable Presumption in Law?

In law, an irrebuttable presumption is a presumption that cannot be rebutted or overcome by evidence to the contrary. In other words, it is a presumption that is assumed to be true unless proven otherwise, and any evidence that contradicts it is not considered.

For example, in some jurisdictions, there is an irrebuttable presumption that a person who has been missing for a certain period of time (such as seven years) is dead, regardless of whether their body has been found or not. This means that if someone disappears and is not heard from again for seven years, their family members or other parties may be able to assume that they are deceased, without needing to produce any evidence of death.

Irrebuttable presumptions are often used in legal proceedings to simplify the process of proving certain facts or to avoid the need for complex and time-consuming investigations. However, they can also be controversial, as they can sometimes lead to incorrect assumptions about the facts of a case.