The principle of reasonable expectation, an extension of the adhesion doctrine, holds that insurance coverage should be interpreted based on what the insured would reasonably anticipate. This means that the terms and conditions of a policy should align with the expectations of the insured, rather than being solely defined by the insurer. In essence, this doctrine aims to protect the insured from any deceptive or misleading language in their insurance contract. By understanding the principle of reasonable expectation, one can better navigate the complexities of insurance and ensure fair coverage.