It's a unique bridge design that I'll need to spend more time to fully understand. But their "litepaper" seems pretty well written, outlining the other solutions and explaining their own solution in reasonable language. Not easy, but reasonable. So I'll give them 4 stars for now because it looks credible enough that it could be a real solution. If it ends up being a smart solution then they'll get 5 stars, if not, then it's down to 3. Show Less