According to a recent USA Today report, Zodiac Seats France has patented a new idea for even more sardine-can airline seat designs. It’s called "economy class cabin hexagon." Only math majors can understand the format.

The squeezed layout sets the middle seat backward. Zodiac says it will "increase cabin density (more people per flight) while also creating seat units that increase the space available at the shoulder and arm area. This creates an overlap in the shoulder areas of adjacent seats." In other words, tighter sardine-can stuffing.