Alvarez was in a different pyramid (Kephren) and from a single point of view. Also, the precision of the detectors improved a lot since the sixties (this is th

Alvarez was in a different pyramid (Kephren) and from a single point of view. Also, the precision of the detectors improved a lot since the sixties (this is the kind of detectors that are used in the LHC, for instance).