Ali and Shari have different perspectives on whether Ali's lateness is rude. Ali invited Shari to dinner and they agreed to meet at the restaurant at 7:00 p.m. Shari arrived promptly at the agreed time, but Ali arrived half an hour later.
From Shari's point of view, Ali's lateness is considered rude. This is because Ali was the one who invited Shari, so she expected him to respect their agreed meeting time. Shari took the effort to arrive on time to make a good impression and show respect for Ali's invitation. She may have felt disappointed or even stood up because Ali did not inform her in advance about his lateness. Being punctual is generally seen as polite, and Ali's lateness could be seen as inconsiderate or disrespectful.
On the other hand, Ali might have a different perspective on the situation. She may not see her lateness as rude or a big deal. Ali could have considered her appointment with the professor as more important or urgent, and therefore prioritized it over the dinner. Ali may not have thought it necessary to inform Shari about her lateness because she believed it was a minor issue that could be easily overlooked. It's possible that Ali didn't anticipate the impact her lateness would have on Shari's feelings or the importance Shari placed on punctuality.
Overall, the difference in perspective between Ali and Shari regarding Ali's lateness is based on their individual values, priorities, and expectations in terms of punctuality and respect for others' time.