Mediator, good to be an expert in the subject matter in dispute or not?

This post contains an interesting reflection on (i) whether it is enough for a mediator to be trained in the skills and techniques of mediation and then mediate any type of dispute or (ii) whether possession of subject matter expertise is of benefit to the parties. The author of the article, Martin Burns, clearly prefers the second option. We let you read this post and make or confirm your own opinion; you can even provide it as commentary below this post.