When somebody lands on your page, feed them with content which they can consume and digest rather than something which is gobbledygook. In the recent Webmaster Help Video, Google's Matt Cutts says that the clarity and comprehension of the content matters a lot.
The question posed was:
“Should I write content that is easier to read or more scientific? Will I rank better if I write for 6th graders?”
According to Matt, the concept depends more on the searcher. If the searcher is a maestro in the particular realm covered by you, he will certainly be inclined towards something which is more scientific and empirical, but as far as the novice is concerned, he will go for the ones which are easier to understand. The content which is more readily understood by an amateur gets more traction, although it does not make much difference in terms of ranking.
Cutts argues that what is important is that you go for both: explain things initially in the layman's language and once you are done with this; you can add jargon and trim it with scientific responses and technical terms.Google Recommends Working up Clarity and Lucidity in Content Before Adding Scientific Jargon!,