The Social Learning Theory is so essential to teaching because it's comprised of doing the one thing humans do best: socializing! If humans didn't socialize, they could never pass what knowledge or ideas they have to one another, and without that, I don't know how we'd survive as a species.
I also think that the Social Learning Theory is important because it brings what is being taught down to earth. To young people, teachers are considered authority, a label to which feelings of contempt and indifference can be produced. Sometimes the teacher can get so caught up giving the lecture that he or she forget to think about how the students are absorbing the material. In high school, my teachers
always would look around the room after a lecture and say,"Do we understand everything?" Then of course we would all murmur "yes" and/or absent-mindedly nod our heads. This would be how our teachers would "know" that we "understood" everything. They never followed through with assessing how well we understood the material or what we did or didn't understand or who really understood or didn't understand what. This is something that the students should have gotten the chance to assess amongst themselves. What would students talk about after the class was over? The lecture that happened that day!
Who do most students turn to at first when they can't answer a math problem? Most likely it will be a friend or someone sitting next to them. When I was in my high school Spanish class, my classmates and I had to read texts in Spanish. Immediately we all split up into groups of friends working to translate what we read. If we hadn't done this, none of us would've never been able to finish it.
So basically what I'm trying to say is that it's important that teachers allow the students to at least have some time to make contact with the people around them. They can talk about what they learned or the teacher could ask them to work together to solve a problem or anything like that. Teachers often get too tied down with maintaining rigid "discipline."
However I do see some problems with SLT as well. The students could go off subject and just start talking about everything but the subject. In some cases having social interactions may not even make sense in some situations. However overall it can be useful in the end. I'm still trying to understand how a teacher would use DLT and SLT together. Perhaps there is no one easy answer for that question.