Final answer:
Tipping correctly is crucial for ensuring fair compensation for service workers earning subminimum wages and for adhering to societal norms of restaurant etiquette.
Step-by-step explanation:
Knowing how to tip correctly when dining out at a restaurant is important for two main reasons. Firstly, waitstaff often earn a subminimum wage and rely on tips as a significant part of their income, so tipping fairly is a way to ensure they are adequately compensated for their service.
Secondly, proper tipping etiquette is a reflection of societal manners and understanding of service industry norms, which can vary greatly from one place to another. Not tipping or tipping incorrectly can hurt the server's earnings and your reputation as a customer.