Perfect on Screen, Wobbly in Reality
■ Success on the Screen Does Not Guarantee Success in Reality In simulation, Tsukamukun sets the cup down perfectly. Run the same motion in the real world, and the released cup wobbles. Friction, sensor error, and tiny flex in the joints never fully make it into the model. Engineers call this the sim-to-real gap.
■ Not Falling Over Is Not the Same as Success The real cup wobbles but stays upright. Hakobukun and the on-screen Tsukamukun call it safe in unison. The real Tsukamukun says it is not. Once it wobbles, the coffee spills. The question is not whether it fell, but whether it stayed still.
■ Conclusion: Going Back and Forth Is How Precision Grows One test never closes the gap. Try it on screen, check it in reality, feed the error back, and repeat. That loop is what Tsukamukun means by R2R2R. The more perfect a result looks, the more it deserves a real-world check. Perfection on screen is a hypothesis. Reality gives the answer.
