Confidence. Well. How about examining the front top roof line of #4 reactor from the Tepco camera. Looks as if the wall is caving inward. Have no idea if this was planned demolition, but it has been sagging ever since that full day of fog/smog we recently had at Fukushima. Look at #4 reactor building. It is behind the second exhaust stack from the right. And behind the second crane from the right. Concentrate on the top roof line.
Live Tepco Camera