Lets assume that each politician in the House of Commons is a genius and the average IQ is 150. Lets say there are 650 of them, then the total IQ is 97500.
Now imagine that just 10000 people vote in the Interactive Democratic system, with an average IQ of 100, then the total IQ is 1million, or 10.25 times the intellectual power of parliament!
This is a facile (if interesting) argument. However, 10000 people have a lot of life experience that isn't factored into the IQ scores. This total of diverse experience is perhaps a better argument in favour of referendum.
(It's not implausible that many millions of people may vote on certain decisions, making the total IQ for Interactive Democracy many magnitudes higher than Parliament.)