The Hard Problems Nobody’s Solved Yet: Why the Real Frontier of Robotic Touch Is Reliability, Not Resolution ehu Thu, 10/15/2026 - 10:21 Part 7 of a series on Physical AI, tactile sensing, and the road to dexterous machines. If you want to see the hardest unsolved problem in robotic touch, you don’t need a lab. You can watch it happen on a trade-show floor.