"Las profesoras leen."
Translation:The professors read.
What do they read? Books? Letters? Students work when they mark them? Surely it would increase someones vocabulary if they knew an extra word that would help them extend sentences. I also think a little context wouldn't hurt, if anything i'm sure it would help people who want to learn a new language, especially if it's a language similar to their own. I don't know, I just think the sentence could be extended and it would be very useful.
Leen applies to anything. They could be reading books, newspapers, etc. They are just reading.
I think that not everybody will absorb as much and will be comforted with a slow progression.