This summary is not the rule. The rule text controls.
Here's a plain English summary of this rule:
This rule sets out the basic goal behind all the evidence rules. Courts are supposed to read and apply these rules in a way that helps cases get resolved fairly, quickly, and without wasting money.
In practice, this means judges shouldn't use technical readings of the rules to slow things down or make a case more expensive than it needs to be. If there are different ways to interpret a rule, the court should pick the interpretation that leads to a fair outcome reached in a reasonable amount of time.
This rule acts like a guide for judges when they're deciding how to handle questions about evidence during a trial. It reminds them that the point of these rules is to help justice move forward smoothly, not to create extra hurdles or delays for the people involved in the case.