OK, so if I understand this correctly, a binary format where you can seek to arbitrary positions to read only the data you need to currently display is a huge performance win versus a big blob of text you have to read and fully parse. As someone who has had to uninstall FaceBook from my Android phone due to its poor performance, excuse me if I'm bewildered that they didn't realize this years ago (FlatBuffers isn't the first binary serialization format) and write it that way in the first place!