Brain Storming in DE

On thursday, I had DE class same as other weeks and I surprized how Dr.Tee with many problems and busy mind came to the class and managed as well as last weeks.
In this class we had a discussion about strength and weaknesses of brain storming in DE.Some of students were agree with strengths, and some of them were disagree.But I think there are more weaknesses for brain storming strategy in DE. Becuase brain storming is a group activity technique disigned to generate a large number of ideas for the solution of a problem.In deed, we can have weak group working in DE becuase of some limitations in technology.(What is your comment?)
In the other words, I think, we can have an efficient brain storming in F2F classes because we have students beside eachother which will enhance the brain storming. Whereas, in DE we cannot have this condition .Perhapse, in future, improvment in DE technologies will affect on this issue.(Maybe I am rong, and also maybe I change it with pass of the time and more study.)