An argument from a similar case, or from analogy, is valid in law.

Explanation

Where no direct authority exists, the law permits reasoning from like cases to like — analogy bridges the gap between settled principle and new facts.

Where this applies

• There's no case directly on point but a similar case supports my argument.
• Reasoning by analogy from established precedent to my new situation.
• Analogy bridges the gap between settled principles and new facts.

See also

• 12.1.1 An argument drawn from inconvenience is valid in law, for the law will not permit any inconvenience.
• 12.1.2 An argument drawn from authority is the strongest in law.