My husband sent me the wikipedia article about aerogels, but I'm having a lot of trouble wrapping my head around them. The wikipedia article alludes to more modern aerogels not being so prone to shattering as the silica ones.

I found this article (http://www.robaid.com/tech/less-brittle-aerogels-increase-the-usability-of-the-lightest-solid-material.htm) which makes me wonder: could aerogels ever be superior to other building materials, like concrete or wood or steel (leaving aside questions of how expensive they are to produce)?