This summary is not the rule. The rule text controls.
This section of the Tennessee Rules of Evidence is currently empty. Rule 301 and the rest of Article III have been marked as "reserved," which means no actual rule has been written for this section yet.
Courts sometimes reserve a spot in their rules when they plan to add something later, or when a topic is being held open for future use. Right now, there is nothing here that affects your case. If you were looking for guidance on presumptions in court (rules about facts that judges or juries must accept unless proven otherwise), you will need to check other sources, since this section does not currently provide any.
