I've seen this question before, and it always seems to be phrased in a way that implies a) that tech people aren't ideas people, and that b) tech people are just a 'resource' that the 'idea man' (aka. the 'real' founder) owns. As in 'Oh yeah, look at my awesome software. Oh that guy? He's just the one that, you know, wrote it all'.
I think we as techies owe it to ourselves to be flipping this on its head, and asking questions on business sites like "How to find a business cofounder?"
I recently started working in a coworking space full of startups. I occasionally overhear ludicrous conversations where an 'idea' person, with a lame idea, is trying to find a 'tech' person for some piddling share of the equity.
I definitely think there's a huge advantage to being two instead of one, but I also think it should be a balanced one, where both people contribute to expanding an idea, and both truly own the idea, despite who initially started out with it.