G'day Bhagwan,
There is definite evidence to support your assertion re consensus opinion being superior to any one individual's opinion in selecting the correct outcome of future events. I remember reading an article on the subject in "New Scientist" a couple of years ago. I have made a cursory search for the magazine in my library without success so far but I keep them and it is somewhere close at hand. If you are interested I will find it out and post the relevant item on this thread.
The point of the article,as I recall, briefly, was that the opinion had to be from people who had studied the question and given it serious consideration. All that sounds rather obvious I know but the results were impressive. (From memory the consensus was of opinions on who would win major categories at the Oscars.)
I also remember that there was a rating competition held a few months ago on this forum or the other racing forum and that the tipsters' results were remarkable as far as the majority (i.e. consensus) picking the winner (and exotics) was concerned. During the competition one of the contestants suggested that it might be the basis for a system. I don't know if anthing came of it but I'm sure he was right and I'm even more sure that they had a better strike rate than newspaper tipsters.
All the best.