I don’t know if this actually counts as a dissenting opinion, since there seems to be a conclusion around here that a little irrationality is okay. But I published a post about the virtues of irrationality (modeled after Yukowsky’s twelve virtues of rationality), found here:
http://antisingularity.wordpress.com/2009/06/05/twelve-virtues-of-irrationality/
I suppose my attempt is to provide a more rational view by including irrationality but that is merely my opinion. I believe that there are good irrational things in the universe and I think that is a dissenting opinion from the major views expressed here. Please take that how you will.
This is quite an interesting piece advocating that not everything about the Singularity will be wonderful and there might be reason to show some restraint. It is sort of the same way that genetic engineering and cloning holds great promise and great peril, and acceptance by some while rejection by others. I do not really believe that the Singularity will ever occur, but I am glad that there is this kind of discussion within the community.
http://antisingularity.wordpress.com/