This summary is not the rule. The rule text controls.
When someone files a motion that depends on facts not already part of the case record, the court has options for how to handle that evidence. The judge can decide to review written statements made under oath, called affidavits. The judge can also choose to hear spoken testimony from witnesses in court, or use depositions, which are recorded statements taken before the hearing.
The court gets to pick which method works best, or even combine methods. For example, a judge might allow some facts to come in through affidavits while also letting witnesses testify in person about other parts of the motion. This gives the court flexibility to get the information it needs to make a fair decision.
If you're involved in a case where a motion raises new facts, this means you may need to prepare evidence in more than one way. You might need written statements ready, or you might need to be prepared to testify or answer questions in a deposition. It depends on how the judge wants to handle that particular motion.
