Sleep eludes me

The following story exemplifies why Sam should not wake up at 7 a.m. (this fact is also illustrated by the fact that he is using the third person).

Today, he walked into his Spanish at 11:20, a class whihc begins at 11:25. But, much to his surprise, Sam saw that the entire class was present and that the professor was fully engaged in her lecturing. Upon taking his seat, he spent the next 10 minutes completely convinced that, like a small child, he was misreading his watch.

Then, having realized that, when the big hand points to the four and the little one points to the eleven, the time is 11:20, he sat, for at least a half an hour, fuming that the professor would start class five minutes early and then leer at him when he came in on time. "I guess I'll have to get here much earlier," he thought maliciously.

Much time passed and many scathing looks were passed when, about ten minutes before class, he suddenly realized that class actually started at 11:15, not 11:25, and that, consequently, his anger was more than undue. Needless to say, it was rough.

Headphones

The headphones I just bought had instuctions. They are as follows:

Wear the earpiece marked R in your right ear and the earpiece marked L in your left ear.

A diagram was included. For visual learners.