Why is it more difficult for consumer to evaluate the effective quality of service than quality of products?

Consumers often find it more challenging to evaluate the quality of service compared to products because services are intangible and cannot be physically examined before purchase. Unlike products, which can be assessed based on features, specifications, and reviews, services are experienced only after consumption, making it harder to gauge their effectiveness beforehand. Additionally, the quality of service can vary significantly based on factors such as the provider's performance, customer interactions, and situational contexts, adding further complexity to the evaluation process.