Okay, let's talk about famous dead Russian scientists.
Rigidity is cool.
Structures shouldn't collapse from their own weight, or under the load they must carry. For example, there is a canal near my apartment. The bridge ominously bends beneath me and always threatens to dump me into the fast flowing waters. If the bridge could be made more rigid, I wouldn't worry so much. Bend the plate and the grid would deform so that the transverse lines remain straight but are no longer parallel while the longitudinal lines bend.